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BULLS ADVENTURE EVO AM 27.5 Review

Bulls Adventure Evo Am 27 5 Electric Bike Review

Bulls Adventure Evo Am 27 5 Bosch Performance Line Cx Motor 4th Gen

Bulls Adventure Evo Am 27 5 Led Charge Level For Powerpack 500 And Key Slot For Abus Keyslot

Bulls Adventure Evo Am 27 5 Handlebar Ergon Ga2 Locking Grips Top Tube Rack

Bulls Adventure Evo Am 27 5 Bosch Kiox Removable Color Display

Bulls Adventure Evo Am 27 5 Battery Charger Port And Abus Key Slot For Powertube

Bulls Adventure Evo Am 27 5 Bosch Powertube 625 Downtube Battery With Plastic Cover

Bulls Adventure Evo Am 27 5 Fox 36 Rhythm Air 150mm Suspension Fork

Bulls Adventure Evo Am 27 5 Magura Mt5 203mm Hydraulic Disc Brakes

Bulls Adventure Evo Am 27 5 Bosch Powerpack 500 Battery Pack

Bulls Adventure Evo Am 27 5 Four Bar Rear Swing Arm Optional Kickstand

Bulls Adventure Evo Am 27 5 Kickstand Mount 18mm Optional Use Rear Wheel Quick Release Thru Axle

Bulls Adventure Evo Am 27 5 Magura Mt5 Brake Levers Adjustable Reach

Bulls Adventure Evo Am 27 5 Megatooth Narrow Wide 34 Tooth Chainring

Bulls Adventure Evo Am 27 5 Monkey Link Magnetic Reflector Or Light Qr Seat Post Collar

Bulls Adventure Evo Am 27 5 Monkey Link Stem Magnetic Reflector Optional Headlight

Bulls Adventure Evo Am 27 5 Plastic Chain Guide

Bulls Adventure Evo Am 27 5 Schwalbe Hans Dampf Rear Tire 2 8 Plus Size

Bulls Adventure Evo Am 27 5 Shimano Deore Xt Derailleur 10 To 51 Tooth Cassette

Bulls Adventure Evo Am 27 5 Shimano Deore Xt Trigger Shifter

Bulls Adventure Evo Am 27 5 On Kuat Sherpa Bike Rack

Bulls Adventure Evo Am 27 5 Top Tube Rack With Bottle Cage Mounted

Bulls Adventure Evo Am 27 5 Powertube 625 Compartment Internal Wire Routing

Bulls Adventure Evo Am 27 5 Batteries Charger And Key

Bulls Adventure Evo Am 27 5 Stock High Step Silver

A long range dual-battery Bosch powered all mountain full suspension electric bike with premium components including Shimano XT 12-speed drivetrain, Magural MT5 203mm hydraulic disc brakes, Fox 150mm front and rear suspension, and 2.8" plus sized Schwalbe tires. The bike is running boost hub spacing with quick release 15mm and 12mm thru-axles.
Available in four frame sizes for optimal rider fit, sold through qualified dealers in the US and Canada. Excellent four bar rear suspension design reduces unsprung weight and isolates horizontal chain movement. Bosch Gen 4 drive system is lighter and smaller, allowing for for shorter chainstay length and standard chainring designs which further reduces kickback.
MonkeyLink magnetic bottle adapter on the downtube and wired-in front and rear light interfaces give you a convenient, beautiful, and durable way to tap into the high capacity battery packs. Capable seat post dropper and sloped top tube do their best to make the bike approachable, the bike can be ridden with just one battery to reduce weight. Wide 10-51 tooth cassette is effective in climbs and descents, narrow wide chainring and plastic chain guide nearly eliminate chain drops.
Forgiving and stable plus sized tires, sturdy stiff thru-axles, wider boost bottom bracket and hub spacing offers strong spoke bracing angles. Matching black accents, including suspension and seat post dropper stanchions. Robust braking solutions with large rotors and quad piston calipers support the heavier weight of 65.1lbs with both batteries attached. Top tube mini rack looks neat by may introduce handlebar and fork collision with bottle cages and bottles mounted. Premium build means higher price point. Additional cost if you want the MonkeyLink lights and bottle setup ($170 for the lights, $50 for the bottle).

Make:

BULLS

Model:

Adventure EVO AM 27.5

Price:

$7,399

Body Position:

Forward

Suggested Use:

Trail, Mountain

Electric Bike Class:

Pedal Assist (Class 1)

Learn more about Ebike classes

Warranty:

2 Years Motor and Battery, 5 Years Frame

Availability:

United States, Canada

Model Year:

2021

Total Weight:

65.1 lbs (29.52 kg) (59.3lb with PowerTube 625 Only, Use the Included Rubber Plug to Protect the PowerPack 500 Interface)

Battery Weight:

13.7 lbs (6.21 kg) (7.9lb Bosch PowerTube 625, 5.8lb Bosch PowerPack 500)

Motor Weight:

6.3 lbs (2.85 kg)

Frame Material:

6061 Aluminium Alloy

Frame Sizes:

16.14 in (40.99 cm)17.32 in (43.99 cm)18.89 in (47.98 cm)21.25 in (53.97 cm)

Geometry Measurements:

Medium 44cm: 17.5" Seat Tube, 23" Reach, 32" Stand Over Height, 35" Minimum Saddle Height, 43" Maximum Saddle Height, 30.75" Width, 76.75" Length, 47.25" Wheelbase

Frame Types:

High-Step

Frame Colors:

Glossy Silver with Teal and Matte Black Accents

Frame Fork Details:

2020 FOX 36 RHYTHM Air Suspension, 150mm Travel, Compression Adjust, Rebound Adjust, 36mm Black Anodized Stanchions, Boost 110mm Hub Spacing, 15mm Thru-Axle with Quick Release

Frame Rear Details:

FOX FLOAT DPS EVOL Air Suspension, 150mm Travel, Compression Adjust (3 Position: Firm, Medium, Open), Rebound Adjust, 27mm Black Anodized Stanchion, Boost 148mm Hub Spacing, 12mm Thru-Axle with Quick Release

Attachment Points:

Bottle Cage Bosses with MonkeyLink Mount, MonkeyLink Stem and Seat Binder Mounts for Lights, Top Tube Rack with Two Bottle Cage Mounts

Gearing Details:

12 Speed 1x12 Shimano Deore XT Long Cage Derailleur with Clutch, Shimano SLX M7100-12 10-51 Tooth Cassette

Shifter Details:

Shimano SL-M8100-1 Deore XT Triggers on Right (Two-Way High Lever, Three-Shift Low Lever)

Cranks:

FSA, Forged Aluminum Alloy, 165mm Length, Eco Steel 34 Tooth MegaTooth Narrow-Wide Chainring with Plastic Chain Guide Loop

Pedals:

Bulls Branded, Nylon Platform with Fixed Pins, Reflectors

Headset:

FSA, NO.55R, Threadless, Internal Cups, Sealed Cartridge, Tapered 1-1/8" to 1-1/2" (44mm to 56mm Outer Diameter)

Stem:

Monkey Link Branded, Aluminum Alloy, 50mm to 70mm Length Depending on Frame Size, 0° Rise, 31.8mm Clamp Diameter, Two 10mm Spacers, One 5mm Spacer, One 10mm Tapered Base Spacer, Rectangular Spacers with Internal Cable Routing

Handlebar:

Zecure Branded, Aluminum Alloy, Low-Rise, 760mm Length, 25mm Rise, 9° Bend, 31.8mm Bore

Brake Details:

Magura MT5 Hydraulic Disc with 203mm Rotors, Quad-Piston Calipers, Magura MT5 Two-Finger Levers with Adjustable Reach

Grips:

Ergon GA2, Semi-Ergonomic, Rubber, Inner Lock Ring, Black

Saddle:

Selle Royale Vivo, Athletic

Seat Post:

Limotech DP-01Z Dropper (100mm, 125mm, or 150mm Travel), Horizontal Plastic Dropper Lever on Right Handlebar

Seat Post Length:

300 mm

Seat Post Diameter:

30.9 mm

Rims:

BULLS Branded, Aluminum Alloy, Asymmetric Design, Sleeved Double Wall, ETRTO 584x35c, 35c Inner Width, 32 Hole, Tubeless Ready

Spokes:

Stainless Steel, 14 Gauge Front, 13 Gauge Rear, Black with Nipples

Tire Brand:

Front: Schwalbe Magic Mary, Rear: Schwalbe Hans Danpf, Both: 27.5" x 2.8" (70-584)

Wheel Sizes:

27.5 in (69.85cm)

Tire Details:

17 to 38 PSI, 1.2 to 2.6 BAR, EVO Evolution, APX Reinforced, TLE Snakeskin, Front: ADDIX Soft Rubber Compound, Rear: ADDIX Speedgrip Rubber Compound

Tube Details:

Presta Valve

Accessories:

Velo Plastic Chainstay Protector, MonkeyLink Magnetic Interface for Optional Front and Rear Lights (Headlight is Aimable), Tubeless Conversion Kit Included (Valve Stems, WTB Rim Tape), Optional MonkeyLink Lights Combo Pack (100 Lux, $170), Optional MonkeyLink Water Bottle ($50)

Other:

Locking Removable Donwtube-Integrated Bosch PowerTube 625 Battery Pack and Top Tube Mounted Bosch PowerPack 500 Battery Pack, ABUS Plus Keys and Cylinder, 1.7lb 4 Amp Bosch Standard Charger, Motor Support Continues Pedaling up to 120+ RPM, IP56 Durability Rated (Drive Unit and Display)

Motor Brand:

Bosch Performance Line CX (Gen 4)

Motor Type:

Mid-Mounted Geared Motor

Learn more about Ebike motors

Motor Nominal Output:

250 watts

Motor Torque:

85 Newton meters (Eco: 40Nm, Tour: 50Nm, eMTB: 85Nm, Turbo: 85Nm)

Battery Brand:

1 Bosch PowerTube 625 3200Ma 18650 Cells, 1 Bosch PowerPack 500 3200Ma 18650 Cells

Battery Voltage:

36 volts

Battery Amp Hours:

30.1 ah (One 16.7Ah, One 13.4Ah)

Battery Watt Hours:

1083.6 wh (One 601.2Wh, One 482.4Wh)

Battery Chemistry:

Lithium-ion

Charge Time:

8 hours

Estimated Min Range:

70 miles (113 km)

Estimated Max Range:

150 miles (241 km)

Display Type:

Bosch Kiox, Removable, Magnetically Attached, 1.9" Transmissive Backlit Color Display, Automatically Adapts to Lighting Conditions, Buttons: Power, Lights

Readouts:

Clock, Assist Level (Off/Gray, Eco/Blue, Tour/Green, Sport/Yellow, Turbo/Red), Light Icon, Batter (Percentage and Infographic), Units (MPH or KM/H), Current Speed, Power Meter Infographic (Shows Rider Input and Motor Input), Range Estimator, Trip Distance, Trip Time, Power (Watts), Cadence (RPM), Average Speed, Max Speed, Heart Rate, Double Battery Readout, Settings

Display Accessories:

Independent Button Pad on Left, Buttons: Walk Mode, +, -, Left, Right, Select, 5 Volt 1 Amp Micro-USB Port on Lower Edge of Display, (Navigate to Settings with Left Arrow then Click Select Button)

Drive Mode:

Advanced Pedal Assist (Measures Rear Wheel Speed, Pedal Cadence, and Pedal Torque Over 1,000 Readings Per Second. Power Output Relative to Pedal Input: Eco 60%, Tour 140%, eMTB 140-340%, Turbo 340%)

Top Speed:

20 mph (32 kph)

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Make or Model

Model Year

Body Position

Suggested Use

Frame Type

Drive Mode

Availability

Price Range

$0 (0 €)$18,000 (16,920 €)

Total Weight

0 lbs (0 kg)227 lbs (103 kg)

Top Speed

0 mph (0.0 km/hr)50 mph (80.5 km/hr)

Battery Watt Hrs

0 watt3,456 watt

Frame Size

0 in (0.00 cm)432 in (1,097.28 cm)

Motor Power

0 Newton meters250 Nm

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This review was provided for free, but BULLS and Cit-E-Cycles supplied a temporary demo bike for me to test. My goal is to be transparent and unbiased with you, this video and writeup are not meant to be an endorsement of BULLS products. I welcome your corrections, additions, and feedback in the comments below, and the BULLS electric bike forums.

Observations:

The Bosch Performance Line CX offers great power, sensitivity to shifting, and is smaller and lighter than ever, but it’s louder and more power hungry than the rest of the line. Having two batteries on this ebike greatly extends the range, but also adds weight. The top battery raises the center of gravity on the frame and required a more aggressive top tube to fit, which significantly raises the effective standover height and may introduce dismount hazard in unstable mountainous terrain. Still, compared to many other dual battery full suspension ebikes (cross country, trail, or otherwise) the suspension design and handling are quite good.
BULLS is a German ebike brand that was formed as a cooperative with dealers. To me, their products offer great value without cheaping out on components, aesthetics, and frame size options. While this particular ebike is not inexpensive, it delivers higher end hardware from respected companies like Bosch, Fox, Magura, and Shimano. BULLS offers customers a way to see, touch, test ride, and get service for their products in Europe, the US, and Canada through their extensive dealer network, which gets priced into the bikes. For a fancier, potentially higher maintenance product like this, I see that as a strong benefit.
There aren’t many trail capable dual battery full suspension ebikes out there right now. Having covered the Riese & Müller Delite in several forms, including the Delite Mountain, I rank the BULLS Adventure EVO AM 27.5 higher for actual mountain biking. The four bar Horst link rear suspension isolates control and handling from braking and pedaling movement. By comparison, the Delite models use a slower swing arm rear suspension with higher unsprung weight and more horizontal chain movement. This can cause kickback in the chain, especially with smaller chainrings, slower suspension response, and less effective stopping from my experience.

Pros:

This is one of just a handful of dual battery full suspension ebikes available on the market right now, especially in multiple sizes! The bike comes in four sizes and features two high capacity battery packs that offer ~1125 watt hours of capacity. I appreciate that they chose the lighter more compact PowerPack 500 for the top battery, so the top tube could be more sloped to make the bike easier to stand over (even if it still is a bit tall).
The bike costs a lot, but BULLS really delivered with premium components from Shimano, Magura, Bosch, and Fox. Both suspension elements are air vs. spring, so they’re lighter and more adjustable. Both the suspension fork and rear shock have black anodized stanchions to match the look of the bike and they offer compression and rebound adjust.
I’m a fan of plus sized tires, especially on electric bikes. They provide traction, stability, and tend to be more forgiving than medium width 29ers. These 27.5″ x 2.8″ Schwalbe tires were hand picked to suite this bike and the front uses softer rubber and a wider deeper tread pattern than the rear, which improves steering. Both tires come tubeless ready (for running lower air pressure and reducing weight).
To accommodate the wheels, both axles are a bit wider (Boost hub spacing). This allows the spokes to get a sturdier bracing angle. Note that the rear spokes are thicker 13 gauge (vs. 14 at the front), to add strength. Both wheels are custom with assymmetric layout to accommodate the large cassette and Boost bottom bracket spacing. Finally, the thicker thru-axles (15mm up front and 12mm in the rear) improve stiffness and overall strength.
Given that the bike is wider and heavier, I love that BULLS includes an 18mm kickstand mount towards the back of the left chainstay. I added one of my own aftermarket kickstands to help steady the bike for this review (you can get a compatible kickstand here), which made it easier to interact with the batteries.
The Limotech dropper seatpost for this bike comes in three sizes, and is matched to the size of the bike you choose. It’s a necessary and useful part on this all mountain electric bike because of the taller top tube (due to the extra battery mounted below). The dropper worked great during my test rides and matches the black accents beautifully.
I love that they used a lightweight generic battery cover for the PowerTube 625 and not metal. This decidion saved weight, money, and makes it easier to swap out any “naked” PowerTube 625 from shops or friends. Some of the older BULLS models used an aluminum alloy cover that looked beautiful but was much less practical.
If you decide to ride without the PowerPack 500, to save weight, there’s a rubber plug that protects the battery interface where the top tube and head tube meet. Great attention to detail here!
I love that BULLS has positioned the locking cylinder for the PowerTube 625 and the charging port up high on the right side of the bike. Both batteries can be charged simultaneously from this single port when they are mounted to the bike… otherwise, you’ll need to plug each one in separately.
This ebike comes with the faster Bosch 4 amp standard charger! It makes perfect sense, given that it ships with two high capacity battery packs. In general, I like this charger because it’s fairly compact, lightweight, and quiet compared to almost all of the competition.
You get a Bosch Kiox display here, which is awesome because it has a built-in Micro USB charging port! This allows you to charge or maintain portable electronic devices while riding! It’s a great feature, given how much battery capacity this bike offers. The display has a durable Gorilla Glass screen, is magnetically attached (for easy removal when parking or if you crash hard), and shows a color light-adapting screen with lots of menus.
In addition to the great number of screens on the Kiox, Bosch also has a smartphone app that offers a GPS map utility as well as some tuning features. I love the default readings on the Kiox however, as they provide more than most of the competitors in the space including pedal stroke RPM, battery charge level percentage (for both packs separately!), and calories burned, and heart rate (with optional heart rate monitor connected).
The fourth generation Bosch Performance Line CX motor really impressed me in terms of power, drive modes, shift detection, high pedal speed support (over 120 RPM), and reduced noise. Many of the older CX models made a high pitched whining noise, but this one was very quiet. The 4th generation CX is also very compact and lightweight at just 6.3lbs vs. 8.8lbs before, in part due to the reduced physical size and use of magnesium.
The motor is able to utilize a standard size chainring now vs. the reduction gear 1/2 sized chainrings of yesteryear. This raises the chain over the chainstay (which has a nice plastic slap guard), helping to reduce kickback. BULLS chose a sturdy narrow-wide chainring to help reduce chain drops, and also included a plastic wrap-around chain guide. I also appreciate the upgraded crank arms and included plastic platform pedals… though I’d probably swap for larger grippier magnesium wellgo pedals like these.
Excellent cassette and derailleur setup. With 12 sprockets, each step up or down is shorter and less of a cadence change. This makes riding more comfortable and probably reduces shifting wear (especially with a large middrive motor). The gear spread is 10 to 51 tooth, which is huge! That 501-degree ratio gives you lots of options for starting, climbing steep hills, or keeping up with steep fast descents. The Shimano Deore XT derailleur is one that I trust to be reliable, and it comes with a one-way clutch that stiffens the derailleur and reduces chain bounce when activated. You can click it to the “off” position when removing the rear wheel or performing drivetrain maintenance.
Great trigger shifters here. The SLX shifters offer multi-step low shifting and a one-step shifter that can be pulled or pushed. I love this setup because I often prefer to push both trigger shifters with my thumb, while keeping my pointer and middle finger on the right brake lever.
The included locking Ergon grips look nice and feel very comfortable and solid to me. I appreciate how clean the cockpit of this bike is, with cables being routed through extended spacers and then down into the custom frame. Shops can access the cables on this bike fairly easily with the PowerTube 625 removed (as shown in the video review above).
Magura MT5 hydraulic disc brakes perform well here. They are rated as entry level gravity, which means they can handle fast descents that you might encounter in downhill riding. The extra large 203mm rotors provide a great mechanical advantage over the large wheels and tires, and both calipers use quad piston vs. standard dual piston. This provides more surface area for better grab and rigidity. Both brake levers offer adjustable reach, and the piston design is meant to deliver low friction and great modulation through a force curve curve (the piston isn’t horizontal to the handlebar but perpendicular, the same direction you pull the lever). The reservoir body is made from lightweight “carbotecture” while the levers are aluminum alloy for durability.
Nice rear suspension design! This is a version of the four bar Horst Link setup which isolates pedaling and braking motion… so you don’t get as much bob when pedaling or squat when stopping hard. The travel path of the rear wheel is more vertical than arced (like a simpler swing arm with fewer pivot points). This preserves chain length and reduces kickback and drivetrain wear. It’s one of the big differentiators for me between the BULLS Adventure EVO AM 27.5 and something like the Riese & Müller Delite Mountain dual battery emtb.
This ebike was designed for all mountain “enduro” riding with longer travel 150mm suspension and a slack head tube angle. This allows it to take bigger hits with big mountain descents. I prefer a setup like this to a full “downhill” electric bike, because it’s still fun to ride on cross country terrain and around town. The suspension felt buttery smooth to me, and I appreciate the quick release setup on both wheels (thru-axles) because the bike is longer than most cross country bikes due to the slack head tube angle, so removing the wheels could save some space during transport. The bike did fit into my Küat Sherpa lightweight aluminum car rack. Note that I have a self-installed 1.25″ hitch receiver on my Toyota Prius and always take the battery packs off the bike to reduce weight on the rack and hitch!
I appreciate the Monkey Link magnetic front and rear light receivers, but wish that the optional lights cost less than $170. Still, having lights that are powered by the main battery packs and are so easy to remove is awesome! The headlight has a screw in the bottom that allows it to be aimed down… which is very handy given the slack head tube angle and resulting stem angle.
BULLS also included a magnetic water bottle mount on the downtube, which is compatible with the Monkey Link Monkey Bottle for $50. It’s also a bit expensive, but works pretty well… You can always remove the Monkey Link adapter plate and install a generic bottle cage in the same spot if you’d like.
Speaking of water bottles… BULLS designed this interesting top tube rack that has two bottle mount bars hanging off on either side. Pretty interesting! I installed a cage to test it out and found that taller bottles will stick up into the handlebar path during sharp turns and limit how far you can steer in either direction. Consider a short accessory holster like this or very short water bottles like this to use this part of the bike safely. Or, you could mount a folding lock or mini pump here, as long as they aren’t too tall ;)
BULLS has integrated the magnet for measuring rear wheel speed into the disc brake rotor, so your wheel can stay more balanced, spokes won’t get loose, and the magnet itself won’t get spun out of place or bumped as easily… the reader sensor is also more protected.
The battery pack locks into the frame using an ABUS core with PLUS keys that can be matched to ABUS locks, it’s a great setup and one of the highest-end locksets around, more info on the official ABUS website here.
BULLS has a vast network of dealers in the US and Canada, they entered into the North America market from Germany (and Europe) around 2016 and have a strong management and field team, I feel confident that their brand will persist and grown here while some other companies have been less stable, having access to dealers for fitting, tuneups, and post-purchase support is part of what makes this a more expensive bike but also gives you a great end-user experience.
I like that the BULLS electric bikes have walk mode enabled, it can really be useful for climbing a steep section of trail if you get off your bike (especially if you’re wearing clip-in shoes) or if you get a flat tire, just press the walk mode button on the top edge of the control pad (near the left grip) and then hold the up arrow to make it go.

Cons:

Due to its custom frame, with dual battery support and internally routed cables, as well as the premium components, and extensive dealer network, the BULLS Adventure EVO AM 27.5 costs a lot. It’s one of the most expensive electric bikes I’ve covered, but it does deliver something special for the money.
In order to support the dual battery setup, full suspension, and larger plus size tires, the frame had to be reinforced for strength. I noticed the wider Boost wheel hub spacing and bottom bracket spacing (to align the chain properly). The additional metal, rubber, and battery weight on this bike makes it heavier than most competing single battery full suspension products. The bike with both batteries weighs ~65lbs, even with the lightweight air suspension. You can reduce weight by roughly six pounds by removing the PowerPack 500 battery, and the bike will still run and get decent range using the PowerTube 625. The opposite is also true, you can remove the PowerTube 625 and the bike will run, but the remaining battery weight will be positioned high up, which impacts handling more.
The bike is truly setup for off-road use and does not include front or rear rack options. For someone who is interested in bikepacking or trekking, you may have to use cheaper bar mount and seat tube mount solutions that impact steering and can get bumped out of place easier. By comparison, the dual battery Riese & Müller Superdelite does have some rack upgrade options but isn’t as optimized for all mountain or even cross country riding (specifically the rear suspension design).
This is a minor note, but the drivetrain does not cycle backwards. Instead, the cranks will freewheel backwards with a bit of resistance (so they don’t spin out of control if you slip off). The result is a drivetrain that is best serviced when the bike is in a stand. I like the ability to pedal backwards and have enjoyed it on some other current generation Bosch motors like the Performance Line for hub gearing seen on the Gazelle Ultimate C380. Perhaps Bosch will add this feature to all motors in the future?
I love that BULLS positioned the charging port and main battery lock cylinder on the right side of the frame (the drivetrain side), because it’s easy to reach without bending over. However, the second battery lock cylinder is located on the left side of the frame. That means you have to walk around the bike while balancing it or carefully lay it down on the drivetrain side (which risks bumping the long cage derailleur) to unlock the second battery PowerPack 500. Ideally, they would all be on the right side of the bike, but this may be a limitation due to Bosch battery interfaces.
Be extra careful taking the top battery (the PowerPack 500) off the frame, because once unlocked it just releases and could tumble off. By comparison, the PowerTube battery clicks down into a released position which then requires a finger press to fully release. I dislike that the key is required to re-mount the PowerTube 625 because that takes two hands and the bike doesn’t ship with a kickstand… it’s a lot to manage. However, mounting the PowerPack 500 is also tricky, because it can be tight and require a lot of effort to push into place and hear the “click” sound. Just be careful with it and don’t fully release it or ride until you’re sure it’s mounted. Better yet, keep both packs mounted at all times if possible… unless you have to park the bike outside or in extreme cold or heat (which is hard on the batteries).
Be careful when lifting and transporting the PowerTube 625 battery because it does not have an integrated handle like the PowerPack 500. The 625 is pretty heavy at 7.9lbs and could easily get damaged if dropped, or really hurt your foot or nice flooring!
As much as I love the Bosch Kiox display panel, the control pad for it has buttons that require a bit of extra force when pressing and the screen readout is kind of small… that’s why Bosch used colors for the four levels of assist. This way, you can interpret data without having to focus in too much and get distracted trying to read. Consider the Bosch Nyon display as an upgrade if you want a larger display and some cool mapping views.

Useful Resources:

Local BULLS bike shops directory and map tool to find a local dealer for fitting and test rides.
Official BULLS North America electric bikes website
Official MonkeyLink accessories website
Bosch Ebike Systems motor comparisons on the EBR forums.
Bosch drive unit comparison on the official Bosch website.

January 29, 2024 (10 months ago)

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MSRP: $5,599
MODEL YEAR: 2020

A unique full suspension cross country commuter electric bike designed for comfort and speed, Class 3 rated 28mph performance reduces commute times, high volume Schwalbe tires offer comfort and stability in a variety of terrains, wider Boost hub spacing and thru axles provides strength for true off-road capability. Available in four frame sizes with an adjustable angle stem for optimal fit and body…...

BULLS COPPERHEAD EVO AM 3 Review

MSRP: $5,899
MODEL YEAR: 2020

An all-mountain style electric bike with longer travel 150mm air suspension from Fox with thicker stanchions and preload + rebound tuning, internal Powertube 625 battery looks great and offers 25% more range, perfect charge port and locking core position on upper right side of frame. Mid-sized 2.8" plus sized tires provide increased traction, reduced deflection, and improved comfort but are…...

BULLS E-STREAM EVO AM 4 27.5+ Review

MSRP: $6,299
MODEL YEAR: 2020

A premium all mountain full suspension ebike with Schwalbe plus size tires, Boost hub spacing, upgraded 203mm Shimano ICE-Tech hydraulic disc brakes, high capacity 750 watt hour battery, and a lightweight Brose S Mag mid-drive motor, excellent Fox suspension and new Jovial dropper post with some suspension built-in. Plus sized tires and rims come tubeless ready to save weight and run at lower…...

BULLS URBAN EVO 10 Review

MSRP: $4,699
MODEL YEAR: 2020

A speedy and almost luxury sporty commuter ebike from BULLS, highlighted by full features like a rear rack, battery integrated lights, comfortable and ergonomic touch-points, reliable electric and mechanical drivetrain, a responsive, agile and nimble ride, and a premium component feel. Driven by a lighter and more compact 4th generation Bosch Performance Line Speed mid-drive motor,…...

BULLS WILD FLOW EVO RS Review

MSRP: $5,999
MODEL YEAR: 2019, 2020

A light 42lb full suspension cross country electric mountain bike with premium blacked-out paint job and ALL accessories, comfortable carbon fiber main frame (alloy rear triangle), the battery and motor are built into one removable drivepack that can be swapped out for an optional storage cover so you can ride as an even lighter acoustic bike. High quality Fox air suspension front and rear, Boost hub spacing provides sturdy spoke bracing…...

BULLS ALPINE HAWK EVO Review

MSRP: $5,799
MODEL YEAR: 2020, 2021

One of the lightest electric bikes I've tested; carbon fiber frame, fork, and seat post reduce weight while dampening vibration for comfort; available in three sizes with matching crank arms, stem, and handlebar for optimal fit. Premium hydraulic disc brakes are easy to actuate in the drops or hood handlebar position,…...

BULLS DESERT FALCON EVO Review

MSRP: $6,299
MODEL YEAR: 2020, 2021, 2022

A solidly built aluminum alloy road bike with carbon fiber for and seat post to dampen vibration, available in three frame sizes for optimal fit, large network of dealers in the US and Canada for fitting and post-purchase maintenance. 28mph Class 3 speed pedelec performance with the 4th generation Bosch Performance Line Speed motor,…...

BULLS E-CORE EVO AM Di2 27.5+ Review

MSRP: $6,899
MODEL YEAR: 2019, 2020

A full suspension electric all-mountain bike with a dual battery setup, 150mm travel, large 27.5" plus sized tires, and Boost hub spacing in the rear for strength, made in three frame sizes. Fox Float suspension in the front with great stanchions, Fox Float also here in the…...

BULLS TWENTY9 EVO 1 Review

MSRP: $3,899
MODEL YEAR: 2019, 2020

A capable and and well-balanced hardtail mountain bike with 29” tires, hydraulic disc brakes, high capacity battery, and a reliable Bosch Performance Line CX Motor. Great Kenda Ace of Pace tires, 29” with 30-50psi, they give you some great float…...

BULLS TWENTY8 E45 Review

MSRP: $4,599
MODEL YEAR: 2019, 2020

A high-speed, feature-complete, urban electric bike with fenders, front suspension fork, suspension seat post, integrated lights and a nice modern rack. Available in 5 sizes including high-step and mid-step frame styles with a gel saddle and…...

2019 BULLS E-STREAM EVO AM 4 27.5+ Review

MSRP: $6,299
MODEL YEAR: 2019, 2020

A full suspension all mountain bike with plus size tires, hydraulic disc brakes, high capacity battery, and a lightweight Brose S Mag mid-drive. 27” x 2.8” plus sized tires provide increased traction, great float, and improved comfort while…...

BULLS CLOSSLITE EVO Review

MSRP: $4,899
MODEL YEAR: 2020

A premium hybrid electric bike available in three frame styles and three sizes, impressive 180mm hydraulic disc brakes with quad piston caliper up front for improved power and cooling, pre-wired for a seat post dropper, integrated LED lights with side view for maximum visibility, reflective puncture resistant tires from Schwalbe. Upgraded Ergon locking grips, gender specific Velo saddle (that felt very comfortable), sleek air suspension…...

BULLS E-STREAM EVO AM 3 27.5+ Review

MSRP: $5,799
MODEL YEAR: 2019, 2020

BULLS MONSTER E S Review

MSRP: $4,899
MODEL YEAR: 2019, 2020

A fat tire electric trail bike with a RockShock Bluto suspension fork, remote lockout, 11-speed Shimano Deore XT drivetrain with Shadow Plus clutch, robust skid plate and alloy drivetrain guides. High-torque Bosch Performance Line CX motor with eMTB drive mode, sand and snow capable if…...

BULLS E-CORE EVO EN Di2 27.5+ Review

MSRP: $8,499
MODEL YEAR: 2019, 2020

A full suspension electric all-mountain or enduro mountain bike with a dual battery setup, 180mm travel, large 27.5" plus sized tires, and Boost hub spacing for strength, made in three frame sizes. RockShox in the front with great stanchions, Fox Float X2 in the rear, Shimano STePs…...

BULLS LACUBA EVO LITE Review

MSRP: $4,799
MODEL YEAR: 2020

One of the most popular models in the Bulls ebike lineup, it comes in four frame sizes and three styles (high-step diamond, mid-step, and step-thru wave), motor and battery weight are low and center, battery is very high capacity at 37.5v 20ah. Extremely stealthy, the drive system and battery are almost completely hidden on this frame and…...

BULLS SIX50 EVO AM 4 SRAM Review

MSRP: $7,899
MODEL YEAR: 2019, 2020

A premium all mountain electric bike with 150mm Fox air suspension, SRAM XX1 Eagle 12-speed drivetrain, Bosch Performance Line CX high-torque motor, and Magura MT7 hydraulic disc brakes with adjustable CARBOTeCTURe levers. Wider Boost hub spacing provides a stronger bracing angle for the spokes and additional room…...

BULLS ICONIC EVO TR 1 Review

MSRP: $5,099
MODEL YEAR: 2019

A comfortable full suspension urban electric bike with adjustable upright body position, wider Boost hub spacing and sturdy thru-axles front and rear, high volume tires offer comfort and stability, they don't have reflective sidewalls but they do offer puncture protection. Totally blacked out aesthetic, everything matches and looks very cool, wires and cables are internally…...

BULLS GRINDER EVO Review

MSRP: $4,999
MODEL YEAR: 2019, 2020

A high speed gravel grinder electric bike, complete with flared drop bars, puncture resistant studded tires, and a paint-matched spring suspension fork offering preload adjust and lockout. Excellent weight distribution, beautiful Bosch PowerTube battery integration that frees up the main triangle for…...

BULLS AMINGA EVA TR 2 Review

A women's specific full suspension electric mountain bike with high quality hardware from Shimano, Magura, Fox, Schwalbe and Bosch, available in two frame sizes with sloped top tube for easy mounting and stand over. Highly adjustable air shocks are lightweight, allow you to sag the frame to match your…...

BULLS E-STREAM EVO 45 AM Review

MSRP: $5,499
MODEL YEAR: 2019

One of the only full suspension mountain bikes from a premium brand that offers Class 3 high speed performance (28mph, 45km/h), long travel 150mm air suspension supports all mountain riding. Excellent weight distribution and drive system integration, the motor and battery are virtually hidden in…...

BULLS STURMVOGEL EVO Street Review

MSRP: $3,999
MODEL YEAR: 2019

Sporty urban electric bike available in metallic grey or glossy white, premium fenders and front rack add utility, mounting points for a rear rack and bottle cage, quiet Brose Drive T mid-motor. Beautiful stitched ergonomic grips and leather saddle from Velo, unique brown tires with whitewall sides…...

BULLS Cross Lite EVO Review

MSRP: $4,399
MODEL YEAR: 2019

One of the most popular BULLS electric bikes, available in three frame styles and four frame sizes, fully-integrated Bosch PowerTube battery looks great and improves balance. Powerful Bosch Performance Line CX motor offers high torque for heavy loads and capable climbing,…...

BULLS CROSS E8 Review

MSRP: $3,199
MODEL YEAR: 2018, 2019

A feature-complete city ebike running the new Bosch Active Plus motor, it's lighter, more efficient, and quieter than previous Active Line iterations, and the compact design is very hidden. Integrated lights and reflective tires keep you safe, the unisex color scheme is professional and…...

BULLS CROSS MOVER SPEED Review

MSRP: $3,999
MODEL YEAR: 2018, 2019

A sporty speed pedelec with beautiful motor, battery, and able integration, the grey and black color scheme help the drive systems blend in, three frame styles to choose from (wave, step-thru, diamond). Bosch Performance Line Speed motor offers ~28 mph support, shift detection, and 120 RPM pedal…...

BULLS E-STREAM EVO AM 4 Review

MSRP: $5,399
MODEL YEAR: 2018

A high-end, full suspension, electric mountain bike, with the high-torque Brose S mid-motor, and a high-capacity 37 volt 17.5 amp hour Lithium-ion battery, excellent weight distribution with hidden drive systems. Rugged all-mountain performance with 150 mm RockShox air suspension front and rear, 15 mm and…...

BULLS URBAN EVO Review

MSRP: $4,399
MODEL YEAR: 2018, 2019

One of the stealthiest 28 mph urban electric bikes I have seen, the Bosch Powertube battery pack is completely hidden inside the downtube and the compact black motor casing blends perfectly with the matte black paint job. The mid-motor is angled up to blend into downtube visually, increase ground clearance, and shorten…...

BULLS SIX50 EVO AM 4 Review

MSRP: $7,399
MODEL YEAR: 2018, 2019

A top-end all mountain electric bike with 150 mm suspension from Fox, Shimano Deore XTR 11-speed drivetrain, Bosch CX high-torque motor, and Magura MT Trail hydraulic disc brakes. Wider Boost hub spacing offers a strong bracing angle for the spokes and room for…...

BULLS LACUBA EVO E45S Review

MSRP: $3,899
MODEL YEAR: 2018, 2019

A high-speed 28 mph commuter style electric bike that comes in four frame sizes and three styles (high-step, mid-step, and step-thru), it offers excellent weight distribution (motor and battery are positioned low and center). Beautiful aesthetic with hidden wires, an internally mounted battery, and a smaller motor casing, the…...

BULLS E-CORE Di2 FS 27.5+ Review

MSRP: $5,999
MODEL YEAR: 2018, 2019

A full suspension electric trail or enduro mountain bike with 150 mm travel, large 2.8" plus sized tires, and Boost hub spacing for strength, made in three frame sizes. All-black frame, fork, and anodized RockShox stanchions makes for a mean look, Shimano STePs E8000…...

BULLS LACUBA EVO E8 Review

MSRP: $3,799
MODEL YEAR: 2018

One of the most popular models in the Bulls ebike lineup, it comes in four frame sizes and three styles (high-step diamond, mid-step, and step-thru wave), motor and battery weight are low and center. Extremely stealthy, the drive system and battery are almost completely hidden on this frame and…...

BULLS MONSTER E FS Review

MSRP: $5,499
MODEL YEAR: 2018, 2019

Top of the line, full suspension, fat tire electric trail bike with RockShock Bluto and Monarch air, remote lockout for the fork, 11-speed Shimano Deore XT drivetrain with Shadow Plus clutch, robust skid plate and alloy drivetrain guides. High-torque Bosch Performance Line CX motor with eMTB drive mode, sand and snow capable if…...

BULLS SIX50 EVO AM 3 Review

An all-mountain style electric bike with longer travel 150 mm air suspension from RockShox, an internalized downtube battery from Bosch, and three frame size options. Fatter 2.8" plus sized tires provide increased traction, reduced deflection, and improved comfort while remaining…...

BULLS CRUISER E Review

MSRP: $3,299
MODEL YEAR: 2018, 2019

A feature-complete cruiser style electric bicycle with paint-matched fork, fenders, rear rack, chain cover, and motor casing, available in three frame sizes with adjustable stem for good fit. Large sprung saddle, puffy stitched grips, swept back handlebars, and the deep step-thru frame make…...

BULLS AMINGA TR 1 Review

MSRP: $4,299
MODEL YEAR: 2018, 2019

A full suspension, cross country style, electric mountain bike made just for the ladies with shorter reach, available in two smaller size options, features a turquoise fuchsia colorway. Sturdy Suntour XCR 34 air suspension fork with remote lockout for easy transitions from rough…...

BULLS TWENTY4 E Review

MSRP: $2,899
MODEL YEAR: 2018, 2019

A tough, sporty looking, high-quality, kids electric bike that can reach ~15.5 mph with four levels of pedal assist, smaller wheels keep the frame low and approachable. Premium accessories including tires from Schwalbe, a Shimano Altus 8-speed drivetrain, and Tektro hydraulic disc…...

BULLS CROSS E Review

MSRP: $2,799
MODEL YEAR: 2017, 2018, 2019

Well priced considering the quality Bosch-made electric drive system, four frame size choices, and three frame styles (high, mid, and low-step). Integrated LED lights and premium Continental tires with reflective sidewall stripes help to keep you…...

BULLS E-STREAM EVO FS 2 27.5 Plus Review

MSRP: $4,099
MODEL YEAR: 2017, 2018

One of the cleanest looking full suspension cross country electric bikes I've reviewed, the battery and motor are built into the frame and match the matte black paint perfectly. Extra large battery capacity for longer rides, EnergyBus magnetic charging standard works on or off…...

BULLS SIX50 E 1.5 Review

MSRP: $3,099
MODEL YEAR: 2017, 2018, 2019

A hardtail trail ready e-bike with comfortable plus sized tires and a spring suspension fork (with lockout), sturdy tapered head tube, rigid thru-axles, and Boost up front. Capable as a commuting platform if you prefer a mountain bike vs. hybrid or city…...

BULLS CROSS LITE E Step-Thru Review

An active, sporty looking, commuter style electric bike with low standover height, available in three frame sizes to improve fit and comfort. High-end drivetrain and motor systems, you get eleven gears with a tough mountain bike level…...

BULLS SIX50+ E FS 3 Review

MSRP: $4,699
MODEL YEAR: 2017, 2018

An all-mountain electric bike with plus sized tires for improved stability, traction and comfort, 150 mm air suspension with compression and rebound adjust. Battery and motor mount design are tighter than older Bosch systems, weight is kept low…...

BULLS E-STREAM EVO 45 FS Review

MSRP: $5,199
MODEL YEAR: 2017, 2018

A high quality full suspension e-mountain bike that's also a speed pedelec (capable of 28 mph top speeds), solid hydraulic disc brakes, wide thru-axles with Boost Technology. Adjustable 150 mm RockShox suspension front and rear, four-bar rear swing arm to reduce brake…...

BULLS E-STREAM EVO 3 Carbon 27.5 Plus Review

MSRP: $4,599
MODEL YEAR: 2017

A Carbon fiber electric cross country mountain bike with premium components and ultra-integrated motor and battery system, excellent weight distribution. The Brose motor is quiet and responsive offering up to 90 Nm of torque output,…...

BULLS DAIL-E GRINDER Review

MSRP: $5,799
MODEL YEAR: 2017, 2018

One of the first Gravel Grinder style electric bikes to make it to America! Made with premium components, high performance lights and a purpose built frame in three sizes. Capable of high speed 28 mph performance, the Bosch centerdrive motor measures bike speed, pedal…...

BULLS SIX50 E 2 STREET Review

MSRP: $3,899
MODEL YEAR: 2017, 2018, 2019

A fully equipped speed commuter capable of 28 mph operation, running on the proven Bosch Performance mid-drive motor and updated 500 watt hour Samsung battery. Extra large 203 mm hydraulic disc brakes offer smooth solid stops without requiring exorbitant hand…...

2017 BULLS LACUBA EVO E8 Review

MSRP: $3,999
MODEL YEAR: 2017

A versatile urban electric bike well suited to commuting, touring and trekking because of its efficient mid-drive motor and larger than average battery capacity, durable internal gearing and belt drive. Available in five frame sizes and three frame styles including wave, mid-step and high-step diamond…...

BULLS E-STREAM EVO FS 3 27.5 Plus Review

A stealthy full suspension all-mountain electric bike with longer travel 150 mm suspension, fully adjustable air fork by RockShox, color matched to frame. Larger 37 volt 17.5 amp hour battery pack to assist with steeper climbs and longer…...

2017 BULLS MONSTER E FS Review

MSRP: $5,299
MODEL YEAR: 2017

Full suspension fat bike with a high quality mid-drive motor from Bosch and their updated 500 watt hour battery pack for extended range. Cool fluorescent paint job that extends all the way through the fork, rear shock housing,…...

BULLS LACUBA EVO E45 Review

MSRP: $4,399
MODEL YEAR: 2017, 2018, 2019

Available in four frame sizes, two styles (high-step and mid-step) with an adjustable stem, active-comfort saddle and ergonomic grips, this bike can fit well and feel good at speed and over long distances. Capable of 28 mph top speeds, this is a Class 3 electric bike with an…...

BULLS E-STREAM EVO FS 3 27.5 Review

MSRP: $4,699
MODEL YEAR: 2016

An all-mountain electric bike with beautifully integrated battery, motor and display... it blends in more than most other e-mountain bikes I've tested and runs quiet. Sturdy 15 mm thru axle in the front and 12 mm axle in the rear…...

BULLS SIX50 E FS 3 RSI Review

MSRP: $4,599
MODEL YEAR: 2016

A loaded full suspension mountain bike with premium electric drivetrain from Bosch offering 75 Nm of climbing torque with the CX motor and a 400 watt hour Samsung battery. RockShox air suspension with 120 mm travel front and rear for solid trail or all…...

2017 BULLS MONSTER E S Review

MSRP: $4,299
MODEL YEAR: 2016, 2017

Premium hardtail electric fat bike with all the fixins, highlights include rear rack bosses, tubeless-ready tires and punched out rims, RockShox air fork with remote lockout and high torque Bosch CX motor. Quality 180 mm hydraulic disc brakes from Shimano for excellent stopping power and modulation, impressive…...

BULLS OUTLAW E45 Review

MSRP: $3,999
MODEL YEAR: 2016

A sporty looking, fairly comfortable speed pedelec capable of ~28 mph top speeds, it's running on an optimized geared hub motor design with heat pipe technology for maximum performance. Unique mid-mount battery box fills the main frame triangle keeping weight low and centered while…...

BULLS STURMVOGEL E EVO Review

MSRP: $3,699
MODEL YEAR: 2016

A beautifully designed urban electric bike painted white for visibility and modern appeal, white walled tires, reflective sidewall stripes, LED lights. Extra sturdy and durable thanks to a 15 mm thru-axle on the front wheel (with…...

BULLS TWENTY9 E FS 3 RSI Review

A full suspension, Bosch powered, cross country style electric bike with efficient 29" wheels, it's available in three sizes for good fit and would feel taller and larger for riders with long legs but still fits some shorter riders given the angled top tube. Quick release for both wheels ads convenience for fixes and transporting the bike, I love…...

BULLS CROSS LITE E Review

Fully loaded urban electric bicycle with great accessories for commuting including an aluminum rear rack, full length fenders with mud flaps and integrated LED lights. Relatively light weight at under 50 lbs, this is due in part to the nicer…...

BULLS E-STREAM EVO FS Enduro 27.5 Review

MSRP: $5,399
MODEL YEAR: 2016

An enduro style full suspension electric mountain bike with longer 160 mm suspension travel, seat post dropper, 27.5" wheelset and premium hydraulic brakes. Downtube-integrated battery pack is out of sight and keeps weight low and centered across the…...

Shaggy

4 years ago

Court Have you any insight into why Haibike delays bringing the Nyon display to the USA? Kiox seems like an interim step or inferior susbstitute to Haibikes equipped with Nyon in Germany.

Thx, mate!

Court

Hi Shaggy! There are many companies that seem to be saying less this year about arrival times because of the supply chain disruptions due to COVID and politics. Nobody from Haibike has talked to me at all for many months (maybe a year), but I have been in touch with Bosch from time to time. My contacts there have been pretty reliable, but the Nyon has only been mentioned once. I do think that the Kiox is a great interim step, because it works with their apps and offers lots of great ride feedback and Micro-USB charging :)