2019 BULLS E-STREAM EVO AM 4 27.5+ Review

Bulls E Stream Evo Am 4 27 5 Plus Electric Bike Review
Bulls E Stream Evo Am 4 27 5 Plus
Bulls E Stream Evo Am 4 27 5 Plus Brose S Mag Mid Drive
Bulls E Stream Evo Am 4 27 5 Plus Monkey Link Bottle Rear Suspension
Bulls E Stream Evo Am 4 27 5 Plus Cockpit View Blox Display
Bulls E Stream Evo Am 4 27 5 Plus Monkey Link Headlight Front Suspension Fork
Bulls E Stream Evo Am 4 27 5 Plus Front Fork
Bulls E Stream Evo Am 4 27 5 Plus Magic Mary Front Tire 203 Hydraulic Brake
Bulls E Stream Evo Am 4 27 5 Plus Monkey Link Rear Light Kind Dropper Seat Post
Bulls E Stream Evo Am 4 27 5 Plus Rear Nobby Nic Tire
Bulls E Stream Evo Am 4 27 5 Plus Shimano Xt 11 Speed
Bulls E Stream Evo Am 4 27 5 Plus 37v 20ah Battery
Bulls E Stream Evo Am 4 27 5 Plus Battery Handle Alloy Case
Bulls E Stream Evo Am 4 27 5 Plus Rosenburg Magnetic Interface
Bulls E Stream Evo Am 4 27 5 Plus Battery Charger
Bulls E Stream Evo Am 4 27 5 Plus 4 5amp Portable Battery Charger
Bulls E Stream Evo Am 4 27 5 Plus Stock High Step Black
Bulls E Stream Evo Am 4 27 5 Plus Electric Bike Review
Bulls E Stream Evo Am 4 27 5 Plus
Bulls E Stream Evo Am 4 27 5 Plus Brose S Mag Mid Drive
Bulls E Stream Evo Am 4 27 5 Plus Monkey Link Bottle Rear Suspension
Bulls E Stream Evo Am 4 27 5 Plus Cockpit View Blox Display
Bulls E Stream Evo Am 4 27 5 Plus Monkey Link Headlight Front Suspension Fork
Bulls E Stream Evo Am 4 27 5 Plus Front Fork
Bulls E Stream Evo Am 4 27 5 Plus Magic Mary Front Tire 203 Hydraulic Brake
Bulls E Stream Evo Am 4 27 5 Plus Monkey Link Rear Light Kind Dropper Seat Post
Bulls E Stream Evo Am 4 27 5 Plus Rear Nobby Nic Tire
Bulls E Stream Evo Am 4 27 5 Plus Shimano Xt 11 Speed
Bulls E Stream Evo Am 4 27 5 Plus 37v 20ah Battery
Bulls E Stream Evo Am 4 27 5 Plus Battery Handle Alloy Case
Bulls E Stream Evo Am 4 27 5 Plus Rosenburg Magnetic Interface
Bulls E Stream Evo Am 4 27 5 Plus Battery Charger
Bulls E Stream Evo Am 4 27 5 Plus 4 5amp Portable Battery Charger
Bulls E Stream Evo Am 4 27 5 Plus Stock High Step Black

Summary

  • 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 remaining stiff and responsive because of thru-axles and Boost hub spacing
  • Ergonomic locking grips from Ergon, remote seat post dropper from Kind Shock, quad piston front and rear hydraulic disc brakes from Magura, 11-speed Shimano XT drivetrain with Shadow Plus clutch
  • Additional cost if you want the lights and bottle setup, $170 for the lights, and $46 for the bottle, this seems kind of high, especially since the bike is already at $6,299, optional rear light inhibits full range of dropper seat post

Video Review

Trusted Advertisers

Introduction

Make:

BULLS

Model:

E-STREAM EVO AM 4 27.5+

Price:

$6,299

Body Position:

Forward

Suggested Use:

Trail, Mountain, Downhill

Electric Bike Class:

Pedal Assist (Class 1)
Learn more about Ebike classes

Warranty:

2 Years Electronics, 4 Years Battery, 5 Years Frame

Availability:

United States, Canada

Model Year:

20192020

Bicycle Details

Total Weight:

55.1 lbs (24.99 kg)

Battery Weight:

8.2 lbs (3.71 kg)

Motor Weight:

6.39 lbs (2.89 kg)

Frame Material:

7005 Aluminium Alloy

Frame Sizes:

17.32 in (43.99 cm)19.29 in (48.99 cm)21.25 in (53.97 cm)

Geometry Measurements:

Medium 44cm Measurements: 17.5" Seat Tube, 22" Reach, 29" Stand Over Height, 35" Minimum Saddle Height, 30.75" Width, 76.25" Length

Frame Types:

High-Step

Frame Colors:

Matt Black with Gloss Black and Silver Accents

Frame Fork Details:

Fox Rhythm 36 Air Suspension, 150mm Travel, Compression Adjust with Lockout, Rebound Adjust, Boost 110mm Hub Spacing, 15mm Thru-Axle with Quick Release

Frame Rear Details:

Fox Float DPS Air Suspension, 150mm Travel, Compression Adjust (3 Position), Rebound Adjust, Boost 148mm Hub Spacing, 12mm Thru-Axle with 6mm Hex Bolt

Attachment Points:

Bottle Cage Bosses, MonkeyLink Lights, MonkeyLink Bottle Adapter

Gearing Details:

11 Speed 1x11 Shimano Deore XT RDM-8000-GS Derailleur with Shadow+ One-Way Clutch, Shimano CS-M7000-11 11-46T Cassette

Shifter Details:

Shimano SL-M8000 Triggers on Right (Two-Way High Lever, Four-Shift Low Lever)

Cranks:

Miranda Classic, Aluminum Alloy, 165mm Length, E-Thirteen GuideRing 36 Tooth Narrow Wide Chainring with E-Thirteen TRS+ Plastic Guide

Pedals:

Wellgo ZZE-01M Alloy Platform, Cage Style

Headset:

FSA Orbit 1.5 ZS (No. 57), Sealed Cartridge, Threadless, Internal Cups, Tapered 1-1/8" to 1-1/2"

Stem:

Monkey Link Branded, Alloy, 55mm to 80mm Length Depending on Frame Size, 0° Rise, 31.8mm Clamp Diameter, Two 10mm Spacers, One 5mm Spacer

Handlebar:

Bulls Branded, Alloy, Low-Rise, 760mm Length, 15mm Rise, 9° Bend

Brake Details:

Magura MT5 Hydraulic Disc with 203mm Front Rotor and 180mm Back Rotor, Quad-Piston Calipers, Two-Finger Magura MT and MT5 Levers with Adjustable Reach

Grips:

Ergon GE10 EVO, Semi-Ergonomic, Rubber, Locking

Saddle:

BULLS Branded, Selle Royale Seta M1

Seat Post:

Kind Shock LEV Si Integra Dropper (100mm or 150mm Travel), Alloy

Seat Post Length:

345mm, 445 mm

Seat Post Diameter:

30.9 mm

Rims:

BULLS Branded, Double Wall, Alloy, (584x35c), 32 Hole, Asymmetric Design, Tubeless Ready

Spokes:

Stainless Steel, 14G Front and 13G Rear, Black with Nipples

Tire Brand:

Schwalbe Magic Mary Front, Schwalbe Nobby Nic Back, 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, ADDIX Rubber Compound, EVO Evolution, APX Reinforced, TLE Snakeskin

Tube Details:

Presta Valve

Accessories:

Velo Plastic Chainstay Protector, MonkeyLink Magnetic Interface for Front and Back Lights, Tubeless Conversion Kit Included (Valve Stems, WTB Rim Tape), Optional Monkey Link Lights Combo Pack (100 Lux, $170), Optional Monkey Link Water Bottle ($46)

Other:

Locking Removable Downtube-Integrated Battery Pack, ABUS Plus Keys and Cylinder, 1.9lb 4.5 Amp BMZ Charger, Maximum 120 RPM Motor Support, IP56 Rated (Drive Unit and Display)

Electronic Details

Motor Brand:

Brose Drive S Mag

Motor Type:

Mid-Mounted Geared Motor
Learn more about Ebike motors

Motor Nominal Output:

250 watts

Motor Peak Output:

570 watts

Motor Torque:

90 Newton meters

Battery Brand:

BMZ 18650 Cells

Battery Voltage:

37.5 volts

Battery Amp Hours:

20 ah

Battery Watt Hours:

750 wh

Battery Chemistry:

Nickel Cobalt Aluminum (NCA)

Charge Time:

5.5 hours

Estimated Min Range:

40 miles (64 km)

Estimated Max Range:

100 miles (161 km)

Display Type:

BLOKS 14D, Fixed, Backlit, Grayscale, Transflective LCD, Buttons: Power, +, -, Lights, Set, (Hold Up for Walk Mode, Hold Set to Change Units, Hold Down to Clear Trip Distance)

Readouts:

Clock, Trip Distance, Total Distance, Power Level (0-4 Blocks), Current Speed, Battery Level (5 Bars)

Drive Mode:

Advanced Pedal Assist (Rear Wheel Speed, Pedal Cadence, and Pedal Torque Sensing, 410% Max Support)

Top Speed:

20 mph (32 kph)

Trusted Advertisers



Written Review

To run the forums, host the website, and travel, I charge a universal service fee for my reviews. This review was sponsored by BULLS. My goal is to be transparent and unbiased, this video and written review are not meant to be an endorsement of BULLS products.

Today we are looking at the BULLS E-Stream EVO AM 4 27.5 Plus. There is a lot in that name, so what is it exactly? Well the AM stands for all mountain, the 4 is the component level, this being the top of the line, and the 27.5 Plus is going to be the tire size. If you have read my review on the AM 3 version, there will be a lot of parallel information here. The two bikes are for the most part identical except for the component trim. The bike comes in 3 sizes (44cm, 49cm, and 54cm) and one color, matte black with these silver accents. It’s using the new Brose high power mid-drive system, the S Mag (sport magnesium), which is 15% lighter, is very responsive, quiet, and very fluid. A lot of people will compare this to the AM 3 which is $500 less (the AM 4 is $6,299). While you save $500, you do loose the Ergon grips, Magic Mary front tire, and having both front and rear brakes being quad piston, where as the AM 3 has only quad piston in the front and dual in the rear. As said before, here you have the Ergon locking grips. The front tire is a Magic Mary’s, but you will notice the rear has Nobby Nick’s tires. Both still 27.5 x 2.8 plus size, and they give you some great float and excellent grip. I think the difference for the two tire types on this bike is better climbing in the rear and better handling in the front. This full suspension here utilizes a FOX Rhythm setup with 150mm of travel and 36mm stanchions on both the front and the rear, so really great for descending or light downhill. They also both have compression adjustment and full lockout, air pressure settings, and rebound adjustment. Each suspension is coated in this this anodized surface, and the rear has a stanchion guard so that helps keep them protected from debris and looking good. Assisting the full suspension is this Kind SI 180mm dropper seat post which can be adjusted in real time, great for when you are switching terrain. Going back to the tires and wheels, I see a 15mm through axle in the front with some 14 gauge spokes and 110mm boost hub spacing which is a little wider so it provides a sturdier bracing angle. In the back it has 13 gage spokes with 148mm boost hub spacing, so again, the same benefit. I love how the quick release in the front has a little dial to adjust the positioning of the lever so you can really get it out of the way for your ride. Working our way to the handlebar, you notice it has a slight bend with a bit of a rise and a couple of spacers here so you can dial it in and make it more aggressive if you wanted. The stem is relatively short at 0 degrees and it has a steeper tube made for all mountain, so do be aware you really can’t adjust that tube angle. The seat is a Royal M1 BULLS branded saddle, which is pretty firm, maybe a little too firm for my personal taste, but still a very quality saddle. It looks like the bike has kickstand provisions that are out of the way of the crank arm, so that’s nice. I also wanted to mention the Monkey Link bottle option. Although $46 is a lot to pay for a bottle, it is very intelligent setup using this magnetic easy-on-easy-off type system. Also they have Monkey Link light provisions for both the front and rear. Again, these are magnetic and tap into the high capacity battery and is just a really clever setup. However, the cost to this is very high too, as the sight setup is an additional $170. I did notice if you get that rear light, you might want to be careful about dropping the seat post, it could come down and strike that. Overall the setup really balances comfort, performance, and reliability. I also need to mention the Velo slap guard, internally routed cables, and bottle cage bosses if you remove the Monkey Link provisions.

Driving the bike is a compact mid-motor from Brose called the Brose S Mag with redesigned casing that uses less material. It’s also using a lighter weight material; magnesium verses aluminum alloy. My guess is that the internals are similar to the Drive S Alu but the weight dropped from 7.5lbs to 6.39lbs. You still get a very narrow Q Factor, optimal spindle placement (to reduce chain stay length for snappier turns and a shorter overall frame length), and excellent ground clearance. This motor is compact and has a sturdy plastic skid plate below, in case you do take a rock or log strike with the suspension fully compressed on a drop. Note that the crank arms are 165mm vs. 170mm to reduce pedal strikes. So, the motor unit is small, but it really packs a punch. You get 250 to 560 watts of power output with up to 90 newton meters of torque! That’s extremely high for a mid-drive unit. Power is delivered based on your rear wheel speed, pedal cadence, and pedal pressure. The new Shuttle mode is all about torque, allowing you to raise it in lower cadence situations, sacrificing battery efficiency for more help if you prefer to pedal slow and reduce cardio while climbing. I personally love this feature because my knees are sensitive and I don’t always want to pedal fast. If, however, you do want to spin, the Brose motors all support 120+ pedal RPM. This means it won’t drop out on you while downshifting on approach to a big hill. Moreso than many other competing products, the Brose motor really hangs in there at high pedal speeds. The Drive S Mag is light, more powerful, and amazingly… more efficient than its predecessors, but it’s still quiet and smooth because it contains a Gates Carbon belt drive that transitions from gears to spindle output. This reduces vibration and provides an organic feeling to the pedal experience that I can vouch for. The older Drive S was my favorite between Bosch, Shimano, and Yamaha for this reason, and Brose is expanding its support and presence in North America. There’s no pedal drag if you do choose to pedal unassisted (no reduction gearing) and the motor is decoupled from pedal strokes beyond the maximum supported speed of 32km/h (20mph). It’s an outstanding drive system, but I do feel that the charging port positioning, on the left side of the motor bulge, requires additional bending over and is in the travel path of the left crank arm… which could get snagged or bumped out of position. At least it’s magnetic with a leash, so it won’t break, and the cover seems very durable. I should also mention this has ‘Flex mode’ which is a progressive pedal response that provides up to 30% more power as it receives input from the torque sensor to provide more power when you push hard vs. older systems that were more cadence based. This is a new feature, and at this point not a lot of information is available on it, so I will update the forums and new reviews as more information becomes available. Mechanically, the bike has a 36 tooth chain ring up front with a light weight guide. In the rear you have an 11-46 sprocket, so really nice and big with a great range for climbing. The derailleur is a Shimano XT Shadow Plus clutch, so you can tighten it or put it down for wheel maintenance or neighborhood riding. Stopping the bike are these lovely Magura hydraulic disc brakes. 203mm rotor in the front (so it is extra large and cools better) with quad pistons, and 180mm rotors in the rear also with quad pistons.

Powering the bike is a 37v 20ah lithium-ion battery pack. This battery is a big win here as it is really high capacity with that amp hour rating…. Its bringing in about 740 watt hours, so really just a great battery for all day riding. There is no battery cover here, but it does have this impressive aluminum alloy incasing that is actually IPX rated, so overall, very durable. The battery is about 8lbs and has this nice handle for transporting. There is also a battery readout infographic so you can check the charge level without putting it on the bike. The battery is secured via lock and key and it is using an Abus system that can be key-to-like with other Abus locks so you only have to carry around 1 key. I love the magnetic interface here for charging, very easy to use and clean setup. The charger itself has a magnetic cable too, and it is about 1.9lbs, so pretty portable. I love that it charges at 4.5amps…. That’s really fast and a great paring with this high capacity battery. To really care for this and other lithium-ion packs, I have heard that storing in a cool dry location vs. extreme heat or cold will extend the life and try to keep it about 50% full when not using for long periods so you won’t stress the cells. Try not to let it run down to zero, because that’s really hard on the cell chemistry.

Operating this BULLS bike feels simple because the display panel is compact and the main buttons are so intuitive. Once the battery is charged and mounted, you may begin by pressing the power button on top of the battery pack or on the top edge of the BLOKS control pad, which is located within reach of the left grip. This wakes it up, and shows your current speed in the middle, a battery bar infographic with five squares below, assist level with up to four full blocks above, and an up and down arrow with plus and minus symbols inside. To raise or lower motor support, you press onto the upper or lower half of the display itself. This fills in the blocks (which go from empty to four full) and that’s how you know what power level you’re riding in. Now, the readouts are off-white in color with the background being black. The readouts are fairly easy to see in bright light because the LCD is transflective. When you click in, the display will also become backlit for a moment, so it’s easy to see in dark riding conditions as well. The BLOKS display panel is definitely on the smaller side compared to Bosch, Yamaha, and Shimano. You don’t get any feedback about average speed, max speed, trip distance, or even odometer. The five 20% battery bars are much less precise than a full one-percentage increment readout and there’s no dynamic range estimator. Going back to the quiet motor and integrated battery design, perhaps this display will go unnoticed by fellow riders or be less provocative at the bike rack. You cannot easily remove it, nor can you swivel it once it’s tightened down. On the left edge of the control pad there’s also a walk mode button (which is useful if you get a flat or encounter a steep gnarly section of trail), along with a lights button. You can hold the lights button in for several seconds and then click up or down on the main screen to change units from miles to kilometers and back. Note that the light button is only really relevant if you purchase the aftermarket Monkey Link compatible lights.

All things considered, I really really enjoy the AM 4, its comfortable, has great performance, and that Brose S Mag motor is super super super quiet. There are some tradeoffs to consider though… some of them may be small, but small issues can add up so let’s see if they are livable for you. I noticed the charging port is positioned next to the crank arm so that could get in the way of the pedals, luckily though, the cord is magnetic, so if it gets pulled, it should remain mostly undamaged. I was a little surprised there was no USB port for charging to take advantage of that high capacity battery. Probably the biggest gripe would be having to buy the additional lights and bottle setup, $170 for the lights, and $46 for the bottle. This seems kind of high, especially since this bike is already at $6,299. If you do get that rear light, it is in the way of the dropper seat post, so that was also disappointing. However, the bike is really a stand out performer and these tradeoffs may seem trivial. I love the comfortable full suspension, the high capacity battery, and the quiet, powerful, lightweight motor. Backed with a 5 year frame warranty, 4 year warranty on the battery, 2 year on all other electrical components, and a dealer network, the BULLS E-Stream EVO AM 4 is a stand out performer. A big thank you to BULLS for having letting me try out the bikes on some beautiful trails.

As always, I welcome questions and feedback in the comment section below. Whether you own a previous version of the bike, have taken a test ride, or are brand new to the space, my goal is to provide an objective and honest resource. You can also join the BULLS Ebike forums and share your own photos, videos, and review updates to help others! Have fun out there, and ride safe :)

Pros:

  • A full suspension all mountain bike with plus size tires, hydraulic disc brakes, high capacity battery, and a lightweight Brose S Mag mid-drive
  • The Brose S Mag (sport magnesium) is 15% lighter, is very responsive, quiet, and very fluid, I enjoyed not only its capabilities at higher RPMs, but also it’s ability to work well in varying situations
  • Great Magic Mary and Nobby Nick’s tires, 27.5 x 2.8 plus size, and they give you some great float and excellent grip
  • The full suspension here utilizes a FOX setup with 150mm of travel and 36mm stanchions on both the front and the rear, so really great for descending or light downhill
  • Both suspensions have compression adjustment and full lockout, air pressure settings, and rebound adjustment, each also is coated in this this anodized surface, and the rear has a stanchion guard so that helps keep them protected from debris and looking good
  • I love the Kind SI 180mm dropper seat post which can be adjusted in real time, great for when you are switching terrain or riders
  • I like the Monkey Link bottle option, it is very intelligent setup using this magnetic easy-on-easy-off type system, also they have Monkey Link light provisions for both the front and rear, again, these are magnetic and tap into the high capacity battery and is just a really clever setup
  • Hydraulic brakes are a big preference for me, so I was happy to see a 203mm rotor in the front (so it is extra large and cools better) with quad pistons, and 180mm rotors in the rear also with quad pistons
  • This 37v 20ah battery is a big win here as it is really high capacity with that amp hour rating, it’s bringing in about 740 watt hours, so really just a great battery for all day riding
  • The battery is also housed in this aluminum alloy casing, so very durable and protected
  • I love the Energy Bus Rosenburg magnetic charging system, the cables and ports are both magnetic so it makes attaching and detaching easy, while reducing damage from violent cord pulls
  • The display is compact, out of the way, and very minimalist, definitely helps the stealthy feel of the lightweight Brose motor and integrated battery

Cons:

  • Buyers may want to potentially opt for the AM 3 which is $500 less, but you do loose the Ergon grips, Magic Mary tires, and having both front and rear brakes being quad piston
  • The seat is a Royal M1 BULLS branded saddle, which is pretty firm, maybe a little too firm for my personal taste, but still a very quality saddle
  • Unfortunately, you have to buy the additional lights and bottle setup, $170 for the lights, and $46 for the bottle, this seems kind of high, especially since the bike is already at $6,299
  • If you do get that rear light, you might want to be careful about dropping the seat post, it could come down and strike the top of it, something to be mindful of
  • No USB charging here, it seems like a bit of a missed opportunity given that high capacity battery with a massive 20ah rating
  • The display cannot be easily removed, nor can you swivel it once it’s tightened down, I like that it is small and out of the way, but some may prefer a larger screen
  • I noticed the charging port is positioned next to the crank arm so that could get in the way of the pedals, luckily though, the cord is magnetic, so if it gets pulled, it should remain mostly undamaged

Resources:

More BULLS Reviews

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: 2019, 2020

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

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…...

BULLS E-STREAM EVO AM 3 27.5+ Review

  • MSRP: $5,799
  • 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 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

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

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

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

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. Capable as a commuting platform if you prefer a mountain bike vs. hybrid or city…...

BULLS CROSS LITE E Step-Thru Review

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

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

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

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

  • MSRP: $4,599
  • MODEL YEAR: 2016

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

  • MSRP: $3,699
  • MODEL YEAR: 2016

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…...


Comments (12) YouTube Comments

ralph casciano
8 months ago

i would appreciate your thoughts, comparing the 2018 vs. 2019 model, since the 2018 was your top rated bike.

  Reply
Court
8 months ago

Hi Ralph, to me, this is still a winning ebike and the small refinements make it even better. I like the battery charging port placement and cover upgrade as well as the Brose S Mag motor. It still looks great, comes in multiple sizes, and has the MonkeyLink stuff… it’s a great product that I would consider buying for myself.

  Reply
Jake
7 months ago

Court, I’m trying to decide between this bike and the Trek Powerfly LT 9.7, whats your take in their differences in how they perform? Thanks!

  Reply
Court
7 months ago

Hi Jake, that’s a tough call! I prefer the ride feel of the Brose S Mag, clean and lightweight battery integration of the BULLS E-STREAM EVO but trust Bosch quality more. Trek has more dealers and their stuff is all standardized. Since I usually only see brand new bikes, the BULLS seems awesome, but it might be worth considering how close a dealer is and reading up in the forums to see if anyone has some real world long term feedback about this. I have heard that the custom batteries that BULLS uses for their Brose models can get damaged more easily than Bosch if dropped, and it doesn’t have the two-step release system like PowerTube. Sorry for the slow reply here… I’d love your feedback someday whichever way you go.

  Reply
Jake
7 months ago

Court, I wound up buying the Trek Powerfly LT 9.7 for some of the same reasons you listed. Speaking to my local Bulls dealer he had some hesitance about being able to perform timely repairs on the Brose motor if needed, although he did find out that Brose just opened a facility now on the East Coast but hasn’t had to deal with them yet. He likened to the fact that the Bosch motor is almost bulletproof and repairs can be completed in a timely fashion. While I think the Bulls E Stream Evo has some better specs than the Trek, the Bulls wouldn’t have been available until their new models are released at the end of June and I am MTB-less right now so the decision was easy.

I also own a Trek Supercommuter + 8S and I am used to how the Bosch motor integrates with pedal input and while it’s not the smoothest sometimes, I’ve always found ample power. Most times, I ride in ECO mode but the one time I used Turbo to cross a busy intersection, I was blown away with the response and power. After taking the Powerfly out for an initial ride yesterday, I was very impressed with it’s overall performance, especially with the Bosch MTB mode, I’m very happy with my selection.

Thank you for your response.

Brian
7 months ago

Should one be concerned that this bike uses a Nickel-Cadmium battery as opposed to Lithium Ion? I’ve read that because of a “memory effect”, a Nickel-Cadmium battery can experience a sudden drop in voltage, to the point in the charge cycle where the charging of the battery began. So the range of this bike with a 750-Watt Nickel-Cadmium could actually be a lot less that a bike with a Lithium Ion 500-Watt battery.

The other issue I’ve read is that Nickel-Cadmium batteries have a longer lifespan than Lithium-Ion batteries. Would you not buy the bike because of the Nickel-Cadmium batteries? Thanks for viewpoint!!

Brian

  Reply
Court
7 months ago

Hi Brian, I’d consider this battery pack on par with other high-end ebike systems. I have moved towards calling them all “lithium-ion” when in truth there is some variation in the type of battery chemistry out there, but not much. Most companies are pulling the same chemistry with slight variations for different sized cells like 188650 or the new 2700. I’m not a battery expert but perhaps this could be discussed in more detail in the help choosing an ebike section of the forums. I think that Ravi is a person who is very knowledgeable when it comes to batteries, look for him ;)

  Reply
John
5 months ago

Thx a lot for pointing to the battery chemistry! But where did you find info about battery chemistry? I can not read from your picture. On USA page is not saying anything except capacity but on EU page is listed as “Lithium Ionen”. Brian is right, Nickel-Cadmium has memory effect. Not sure about Nickel Cobalt Aluminum. Court, could you please double check what kind of battery is actually used?

Tomasz
4 weeks ago

I got Li-ion battery in mine estream AM4 2019 (EU).

  Reply
Court
4 weeks ago

Hi! My understanding is that most of these new battery types can be categorized as “Lithium-Ion” but some companies will go so far as to specify the exact chemistry of their cells. I think BULLS uses some of the highest end product out there, their packs for Brose ebikes are done by BMZ, along with the chargers, and they use the highest quality cells that last longer and are more reliable :) how have you liked your AM4 so far?! I just launched the 2020 review here, it’s very similar to last year, just a few little refinements.

  Reply

Post a Comment

Your email address will not be published.

This site uses Akismet to reduce spam. Learn how your comment data is processed.