BULLS E-Stream EVO AM 4 Review

Bulls E Stream Evo Am 4 Electric Bike Review
Bulls E Stream Evo Am 4
Bulls E Stream Evo Am 4 Brose Drive S Mid Motor Ebike
Bulls E Stream Evo Am 4 Downtube Bmz Electric Bike Battery 37 Volt
Bulls E Stream Evo Am 4 Low Rise Bar Ergon Ge10 Grips
Bulls E Stream Evo Am 4 Marquardt Comfort Control Pad Display
Bulls E Stream Evo Am 4 Rockshox Lyrik Rc Air Fork 150 Mm Travel
Bulls E Stream Evo Am 4 Selle Royale Seta M1 Saddle Kind Shock Lev Integra Dropper
Bulls E Stream Evo Am 4 Shimano Deore Xt Shadow Plus 11 Speed
Bulls E Stream Evo Am 4 Magura Mt5 203 Mm Hydraulic Disc Brakes
Bulls E Stream Evo Am 4 Rockshox Deluxe Rt Rear Air Shock 150 Mm Travel
Bulls E Stream Evo Am 4 Fast 5 Amp Bmz Ebike Battery Charger
Bulls E Stream Evo Am 4 Electric Bike Review
Bulls E Stream Evo Am 4
Bulls E Stream Evo Am 4 Brose Drive S Mid Motor Ebike
Bulls E Stream Evo Am 4 Downtube Bmz Electric Bike Battery 37 Volt
Bulls E Stream Evo Am 4 Low Rise Bar Ergon Ge10 Grips
Bulls E Stream Evo Am 4 Marquardt Comfort Control Pad Display
Bulls E Stream Evo Am 4 Rockshox Lyrik Rc Air Fork 150 Mm Travel
Bulls E Stream Evo Am 4 Selle Royale Seta M1 Saddle Kind Shock Lev Integra Dropper
Bulls E Stream Evo Am 4 Shimano Deore Xt Shadow Plus 11 Speed
Bulls E Stream Evo Am 4 Magura Mt5 203 Mm Hydraulic Disc Brakes
Bulls E Stream Evo Am 4 Rockshox Deluxe Rt Rear Air Shock 150 Mm Travel
Bulls E Stream Evo Am 4 Fast 5 Amp Bmz Ebike Battery Charger


  • 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 12 mm thru-axles with Boost hub spacing for sturdy spoke bracing angle, larger 2.8" plus sized tires improve traction and float
  • Available in three frame sizes for optimal fit, grey and black frame color hides the battery and motor, the motor is very quiet and smooth, internally routed wires are protected and concealed, the control pad is compact and less showy
  • One of the more expensive models from Bulls due to higher-end components, the Marquardt display has an integrated Micro-USB port, premium Schwalbe tires, Ergon grips, Kind Shock seat post dropper, and Shimano Deore XT drivetrain with Shadow Plus one-way clutch to reduce drops and slaps, standard sized 38 tooth chainring

Search EBR

Video Review

Trusted Advertisers





E-Stream EVO AM 4



Body Position:


Suggested Use:

Trail, Mountain, Downhill

Electric Bike Class:

Pedal Assist (Class 1)
Learn more about Ebike classes


2 Years Motor and Battery, 5 Years Frame


United States, Canada

Model Year:


Bicycle Details

Total Weight:

54.9 lbs (24.9 kg)

Battery Weight:

7.1 lbs (3.22 kg)

Motor Weight:

6.61 lbs (2.99 kg)

Frame Material:

7005 Aluminium Alloy

Frame Sizes:

17.32 in (43.99 cm)19.29 in (48.99 cm)21.26 in (54 cm)

Geometry Measurements:

Medium 49 cm Measurements: 19.5" Seat Tube, 23.5" Reach, 30.5" Stand Over Height, 29.75" Width, 76.25" Length

Frame Types:


Frame Colors:

Grey Matte with Gloss Black and Silver Accents

Frame Fork Details:

RockShox Lyrik RC Solo Air Suspension Black with Titanium Nitrade Coating, 150 mm Travel, Compression Clicker (Charger), Rapid Recovery Rebound, Boost 110 mm Hub Spacing, 15 mm Thru-Axle with Quick Release

Frame Rear Details:

RockShox Deluxe RT Air Suspension, 150 mm Travel, Lockout, Rebound Adjust, 148 mm Hub Spacing, 12 mm Thru-Axle with 6 mm Hex Bolt

Attachment Points:

MonkeyLink MonkeyBottle Mount on Downtube

Gearing Details:

11 Speed 1x11 Shimano Deore XT Derailleur with Shadow Plus One-Way Clutch, CS-M7000-11 11-42T Cassette

Shifter Details:

Shimano SL-M8000 Two-Way Triggers with Dynasys on Right


Miranda Classic, Aluminum Alloy, 170 mm Length, 38 Tooth Chainring with E-Thirteen TRS+ Chainguide


Wellgo C128DU Alloy Platform, Cage Style


FSA Orbit 1.5 ZS, Sealed Cartridge, Threadless, Internal Cups, 1-1/8" to 1-1/2" Tapered


MonkeyLink Branded, Alloy, 55 mm Length, 0-Degree Rise, 31.8 mm Clamp Diameter


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

Brake Details:

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


Ergon GE10, Flat Rubber, Locking


Selle Royale Seta M1

Seat Post:

Kind Shock Lev-Integra Dropper (100 mm or 125 mm Travel)

Seat Post Length:

350 mm

Seat Post Diameter:

30.9 mm


BULLS Branded, Double Wall, Alloy, (584x35c), 32 Hole


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

Tire Brand:

Schwalbe Magic Mary, 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 Soft Compound, EVO Evolution, APX Reinforced, TLE Snakeskin

Tube Details:

Presta Valve


Velo Chainstay Protector, MonkeyLink 34.9 mm Seat Post Clamp


Locking Removable Mid-Mounted In-Frame Battery Pack, 2.6b lb 5 Amp Charger, Maximum 120 RPM Motor Support, 20 mm Kickstand Mounting Point, ABUS Locking Core and Keys

Electronic Details

Motor Brand:

Brose Drive S (Sport)

Motor Type:

Mid-Mounted Geared Motor
Learn more about Ebike motors

Motor Nominal Output:

250 watts

Motor Peak Output:

530 watts

Motor Torque:

90 Newton meters

Battery Brand:


Battery Voltage:

37 volts

Battery Amp Hours:

17.5 ah

Battery Watt Hours:

647.5 wh

Battery Chemistry:


Charge Time:

5 hours

Estimated Min Range:

50 miles (80 km)

Estimated Max Range:

130 miles (209 km)

Display Type:

Marquardt Comfort, Fixed, Backlit, Greyscale LCD, Control Panel with Integrated Button Pad, Buttons: Up, Down, Power, Joystick, Lights, (Click to the Left or Right with oystick for Different Menus)


Assist Level (4 Bars), Speed, Battery Level (4 Bars), Human Power (in Watts), Residual Range, Tour Distance, Average Speed, Max Speed, Reset, Total Distance, Max Speed, Wireless (Off, Smartphone Bluetooth, Heartbelt Bluetooth), Auto Light

Display Accessories:

Micro-USB Port (5 Volt 500 mAh)

Drive Mode:

Advanced Pedal Assist (Measures Wheel Speed, Pedal Cadence and Pedal Torque, Power Output: 50%, 120%, 280%, 320%)

Top Speed:

20 mph (32 kph)

Trusted Advertisers

Written Review

The E-Stream EVO AM 4 is a category leader in the Bulls ebike lineup. For all mountain riding, it offers longer 150 mm (~6 inch) suspension front and rear. Both air shocks offer pressure, rebound, and compression adjust to optimize performance for different rider weights and terrain; climbing or descending. As with many of the higher-end Bulls products, the E-Stream EVO comes in three sizes for optimal fit. As a medium sized, lighter weight rider myself (weighing ~135 lbs), I appreciate that the suspension can be sagged and mounting/dismounting is easier because of the seat post dropper and angled top tube. The Kind Shock Lev-Integra dropper post can be set at any height vs. 10 step increments, and it comes in handy when transitioning from climbs to descents. This electric mountain bike looks beautiful, you can hardly tell it has a motor because the Brose S mid-drive is so compact and quiet. The battery pack seats up into the downtube vs. being bolted onto the top, and most of the electrical wires, shifter cables, and brake lines are internally routed. Furthermore, the frame is painted dark grey with black accents, and this allows the black accessories, such as the display panel, to blend in. It’s one of my favorite e-mountain bike models to date, because it offers such efficient and responsive riding, allows you to go further with a high-capacity battery, and spares no expense on brakes, drivetrain, accessory options, grips, or tires. Yes, it costs a bit more than your average all mountain model, but the price is not excessive for what you get. Bulls is a German brand with global distribution, backed by a network of dealers in Europe which launched it as an “in house” brand. I have been reviewing their e-bikes since 2016, heard great things from dealers and customers, and always received quick support and follow up from their leadership team, which are based in Southern California. There are a few trade-offs and things to get used to with this bike, namely the compact Marquardt display panel, that I’ll get into later.

Driving this bike is one of my favorite new mid-drive motors, the Brose S. I have always appreciated how compact, lightweight, and quiet the Brose drive systems are, and apparently the S (for Sport) is 1.25% more efficient, to help extend range, while also being 15% more powerful! So what’s the catch? Perhaps it weighs slightly more than the original Brose T, but at ~6.61 lbs it is still quite a bit lighter than the competing Bosch Performance Line CX. I think the other trade-off from the Brose T is that it produces more noise. Inside all of the Brose mid-drives is a Gates carbon belt drive that reduces vibration between your cranks, the spindle, and the internal gearing. It’s quiet and very smooth, there’s less of a vibration feel, but it is still extremely powerful, offering up to 90 Newton meters of peak torque. Unlike a lot of competing systems, the Brose motor controller seems to rely heavily on pedal torque vs. cadence or any set level of pedal assist. I demoed this a bit in the video review above, but the short explanation is that you can be riding in the highest level of assist but still be riding slowly without the motor kicking on much at all… if you aren’t pushing very hard. It feels very natural and support is there almost instantly when you do exert pressure. One feature this motor controller does not offer is shift detection, but the power cuts out very quickly as you reduce pedal torque, so it’s best to ease back when shifting in order to reduce mashing (chain, sprocket, and derailleur stress and wear). You and the motor have access to an 11-speed drivetrain for climbing and descending. As you shift through the gears, you and the motor get an efficiency benefit… and the motor will support zero to ~20 miles per hour with 120+ pedal rotations per minute. This means that you can spin quickly verses having to shift to a higher gear in order to reach higher speeds. Some of the older motors, and even some of the newer Yamaha and Shimano motors don’t seem as capable at higher RPM’s and it’s something I personally care about, because I have a sensitive knee. I’d much rather spin at higher speeds with less pressure than lumber along, or have to shift gears frequently as terrain changes. The chainring is a standard 38 tooth, which could be swapped out easily, and the cassette offers 11 to 42 tooth sprockets. I was able to climb terrain so steep that the rear wheel began losing traction and then descend at upwards of 35 miles per hour comfortably. The derailleur is Shimano Deore XT with Shadow Plus, and that means it’s mounted below the right chain stay and tucked in while also having a one-way clutch to increase resistance and pressure that negates chain slap and drops. The standard chainring helps to elevate the chain to reduce chain slap anyway (compared to the smaller proprietary sprockets that Bosch uses), and it might not suffer from chain suck as much on the bottom because there’s extra space next to the motor casing. Mud and grassy debris should be cleared by the E-Thirteen TRS+ full-surround chain guide, which virtually eliminates drops and might also clear your pant leg (if you’re riding with loose pants for some reason). On that note, the left chain stay does have provisions for adding a kickstand if you so wish, perhaps for weekday use – riding around town.

Many of the Brose powered electric bikes from Bulls have higher-than-average battery capacities, and this is a highlight for me because they don’t actually weight that much more. Looking at 7.1 lbs for a 647.5 watt hour pack is impressive when you compare the 500 watt hour Bosch Powerpack at 5.8 lbs or their heavier Powertube at ~6.15 lbs. You’re getting 30% more capacity for a 22% increase in weight… and that’s comparing to the lighter Powerpack. You can do a lot with 150 extra watt hours, especially on an efficient mid-drive setup. The battery pack is not perfect however, seating up into the downtube vs. down from the top. It might just be the demo model I tested out, but the pack sort of flopped out when unlocked vs. having a two-step button like the Bosch Powertube. The pack is contained in plastic vs. tougher aluminum alloy but does have a thick rubber guard all the way along the bottom. I was told by Bulls that the pack itself is similar to 2017 models (which had a foam sticker vs. integrated rubber) and that the packs could be interchangeable, but might not look great. This is one area where Bosch has a lead, all of their packs have remained the same and are easier to find and swap out on-location. It can be difficult to fly with high capacity Lithium-ion batteries, and being able to rent or borrow on location is great if you want to bring your own personal bike. The charge port on this battery is fancier, and interfaces with a high-speed 5 amp charger for quicker fills… but I have read that this can stress the cells more than slower 2 or 4 amp charging. You can protect your packs from premature wear by storing them in cool, dry locations vs. extreme heat and cold. And, you don’t have to remove the pack from the bike at all to charge it, if you prefer. This could reduce the potential for accidental drops, because of the flop-out unlock situation and limited grip and handle design, the pack can be surprisingly heavy when the weight is instantly transferred into your hand or you’re even pulling it down from the downtube (working with gravity). Remember, by default there is no kickstand, so you might also be balancing the bike. It could be best to lay the bike onto its left side when working with the battery… just be careful with the larger 203 mm disc brake rotors, don’t touch them because the oil from your fingers can wreck the pads over time. A final not about the battery pack and charging interface is that it’s magnetic, and iron filings and other debris can stick to the end of the plug, just brush it off occasionally to ensure a good contact for charging.

Another exciting but mixed feature of the new Brose system featured on this ebike, is the compact Marquardt display panel. It’s compact, which allows it to blend in and possibly avoid damage if the bike is dropped or crashed. It offers lots of menus and settings (way more than the comparably sized Bosch Purion), but has an additional joystick button thing that could get worn out quicker. And, I’m told that it offers active Micro-USB charging through a port on the right side. This could be a huge win if you like to listen to music or use your phone for GPS navigation (as we did for the longer adventure ride in the video above). The actual LCD display is much smaller than the Purion and could be difficult to read at times, though it is brighter in terms of backlighting. I found that the location of the Marquardt on this particular ebike was difficult to reach because of the seat post dropper lever. I had to reach over and around the dropper lever, then across the brake lever mount. If I were setting the bike up, I might angle the dropper lever down or up more to create space. It might even be possible to mount on the right side, between the brake lever and trigger shifters. There’s a lot of room for experimentation here, and I want to call out the two-finger Magura brake levers, which have adjustable reach and can be spaced out to use with just one finger, if you prefer. Overall, the cockpit is clean and simple, I love the locking Ergon grips and appreciate the slightly raised handlebar and short stem for comfortable downhill riding. I guess, coming back to the display, there was some confusion about how to change units, and I was told that Bulls is releasing a Bluetooth app at some point. I wish I could say more about that now, but perhaps you can chime in with comments below if you have seen and used it. Apparently, it will also connect to a Bluetooth heart rate monitor? Though, many of the monitors I see have used from Garmin use Ant+ vs. Bluetooth. I wish that the Marquardt showed a greater number of batter bars or even a battery percentage vs. just for bars, and the range estimate menu seemed static vs. dynamic as we used the up and down keys to select more or less power. This is one area where the Bosch displays are really nice. Overall, if you have ridden a Bosch CX powered ebike and used the newer eMTB drive mode, I would say that it feels a lot like all of the Brose S drive modes. It’s just fluid and responsive, not too much work, but not as zippy and on/off as many of the other systems. It’s one of my favorites and one of the most natural. Using the joystick to navigate through menus, even having to be in the assist menu before the up and down keys worked, was sort of frustrating. I didn’t realize that you could use the joystick to go up and down in some areas until after a lot of riding. It’s amazing that they packed so much into this display, and I appreciate the dedicated light button (if you add lights to the magnetic MonkeyLink interface on the stem and seat post clamp). There’s also a walk mode if you hold the up arrow while already in one of the three or four assist levels. It went pretty slow at first, until I shifted gears up… but you’re probably always going to be starting in a lower gear when getting off to walk (assuming you couldn’t balance on a climb) so I wish it was faster and measured wheel speed vs. having a set rate. Think about the moment you finish walking and then hop back onto the bike… with the gear set high so walk mode would be faster, now you have to mash gears to shift low to pedal, it’s frustrating :/

Thankfully, there aren’t that many truly frustrating things about the BULLS E-Stream EVO AM 4 and the Brose S setup. Nor should there be for such a price, right? I had a blast riding this model, loved how blacked-out it looked with the muted color scheme and even the anodized black stanchions on both RockShox shocks. If you’re not interested in answering questions from fellow cyclists, this ebike is one of the stealthiest around (in terms of looks and noise) and the wider hubs and plus sized tires make it a blast to descend with, there’s very little deflection, weight is positioned well on the frame and it handles well. I love that there was room to squeeze in a bottle cage mount at the downtube, and that there’s a fancy magnetic MonkeyLink option there for easily reaching and re-attaching fluids as you ride. If price were no object, this would definitely be on my shortlist of leading electric mountain bikes. There’s a bit less trust of the Brose motor in my mind because I have seen Bosch for so much longer, but I do trust Bulls and it’s nice to know that this new Brose S model is a refinement of the earlier T that has worked so well. Bulls improved some of the rubber covers around the charging port and key hole from 2017, but it’s still not as seamless as some other companies. Weighing in at ~55 lbs, the bike is heavier than a hardtail but the larger 203 mm hydraulic disc brakes always felt good, even on longer descents for this ride. I felt secure with the tires, brakes, and weight, and it just felt good. Big thanks to the Bulls team for partnering with me on this post and providing a couple of bikes to compare back to back, it was awesome to see the Powertube and Purion from Bosch next to the Brose Marquardt and proprietary Bulls battery integration. As always, I’ll do my best to answer questions below and you can get other opinions directly in the Bulls Ebike Forums.


  • The Brose S (Sport) motor has become one of my favorite ebike mid-drive systems (right up there with the Bosch CX), it’s 15% more powerful and 1.25% more efficient than the Brose T while remaining compact, quiet, and relatively lightweight at 6.61 lbs
  • Because the Brose mid-motor uses a traditionally sized chainrings (38 tooth in this case), it doesn’t require a reduction gear, won’t suffer from chain suck or chain slap as much, and can be swapped out with other chainrings more easily
  • You should get excellent range on this bike, because the motor allows you to leverage 11 gears to climb easily and the battery capacity is way above average with 37 volts 17.5 amp hours for ~647.5 watt hours total
  • This e-bike looks amazing because the motor is so compact and built into the frame, the battery actually seats up and into the downtube, and the frame color is dark grey and black – which blends everything together (including wires, which are internally routed across most of the frame)
  • Most of the ebike chargers I see are 2 amps or 4 amps, but this one uses a 5 amp charger from BMZ, it plugs into the battery with a magnetic EnergyBus connector that will simply pop out if tripped over, I love how you can charge the pack on or off the bike and am happy that the battery is higher capacity because bringing the charger along would be less fun since it’s bulkier and weighs ~2.6 lbs vs. just 1.5 or ~2 lbs on most other chargers
  • Relatively lightweight for an all mountain electric bike with longer travel 150 mm ~6″ suspension, thicker stanchions, sturdier joints, and a high capacity battery pack, it weighs ~55 lbs total and could be reduced slightly by running the tires tubeless (they are tubeless ready)
  • Available in three frame sizes so you can improve fit, the air suspension is more highly adjustable than spring, you can sag it to match your body weight or ride style and both shocks are anodized with Titanium Nitrade coating to make the stanchions harder and slicker
  • Boost hub spacing widens the spoke position and improves the bracing angle to support larger plus sized tires, both the front and rear axles are thru-axles for increased stiffness and strength on rough terrain and the front offers quick release for easier trail maintenance and transport
  • Massive 203 mm hydraulic disc brakes with quad-piston calipers from Magura offer efficient cooling and more powerful, controlled, stops. You can adjust the reach on each two-finger brake lever and even use them with one finger if that’s your preferred hand position
  • I love that Bulls managed to squeeze in a bottle cage mounting point on the downtube, and they partnered with MonkeyLink so you can use a magnetic bottle adapter here for easier stowing vs. a cage
  • It’s neat to see innovation in the lighting and fenders space, the new MonkeyLink mounts at the stem and seat post collar allow for a range of accessories that will run off the main ebike battery! my only complaint is that the headlight I saw was not aimable and thus, depends on the head tube and stem angle for direction
  • The Brose powered E-Stream bikes seemed to have a lower stand over height and shorter overall length than the Bosch powered models, I think the chain stays are shorter here because of how the motor is designed, which makes for a nimble snappy ride
  • To me, the rear suspension design looks a lot like split pivot, it’s designed to isolate chain movement (reducing kickback) by providing vertical play vs. horizontal and this allows for effective braking but may suffer from bob when climbing, thankfully, both shocks have compression adjust with near-lockout
  • Bulls added a nicer full-surround chain guide to eliminate drops and clear debris from the chain if you’re riding in muddy or tall grass conditions
  • Minor prop here, I love that the left chain stay actually has mounting holes to add a kickstand! That’s kind of rare for a full suspension electric mountain bike, but could come in handy if you commute or ride around town during the week
  • The motor provides high levels of power and support almost instantly, so you can start a climb in higher gears or just get the support needed to balance right off the bat, the controller is measuring wheel speed, pedal cadence, and pedal torque rapidly
  • Extra sturdy Shimano shifter levers allow for two-way action on the high gear trigger and multi-shift on the low gear lever, it’s exactly the kind of setup you’d expect from a nicer mountain bike
  • Bulls has a great reputation in the US, their dealer network is expanding and the 2+ year warranty offered on this and other models appears to be well supported, shops have told me that this company is easier to work with and that has been my personal experience as well
  • I like that the display panel is compact to reduce the potential for bumps and scrapes, and that there are dedicated buttons to activate lights and explore menus, it’s pretty deep for such a compact display but you have to use the joystick to navigate left/right and up/down which might not be as sturdy with lots of use compared to simple press buttons (the early Specialized Turbo models used a joystick that eventually broke for a lot of people)
  • The motor kept supporting me, even when I was spinning (pedaling) very quickly at or even above 120 RPM, this was a big limitation with some of the older mid-drive systems and the takeaway is that you can simply pedal faster vs. having to shift gears to hit higher speeds in a pinch, as someone with a sensitive knee, it’s great to be able to spin faster vs. pushing harder and pedaling slower


  • I had mixed experiences with the battery mount design on this bike, it seats up into the downtube and sort of just drops out when unlocked, be extra careful handling this thing because it weighs ~7.1 lbs but doesn’t have an obvious handle, it could drop out and hit the ground which could cause damage… and replacements are expensive $900+
  • The battery charger is relatively large and heavy at ~2.6 lbs vs. just 1.5 or ~2 lbs, because it’s built into a tough alloy casing, the magnetic Rosenberger EnergyBus interface is cool but can pick up iron filings if set down in the dirt or sand
  • The Brose S motor is extremely capable, offering up to 90 Newton meters of torque, but it does not have shift detection like Bosch or Impulse, so you want to ease off when changing gears so you don’t mash and bend your sprocket teeth
  • I struggled to figure out how to switch from km/h to mph in the Marquardt display, it might be something that is setup at the factory and not open to adjustment? I was not able to experiment with the app but perhaps that adds some additional features
  • The display is a bit bright, in terms of backlighting, it only shows four bars for battery level (five, ten, or a percentage would be more useful), and the range estimate isn’t as dynamic as Bosch and some other companies where it gives you an range for each level of assist
  • By default, the seat post dropper lever is mounted near the left grip, and it sort of gets in the way of the display panel (which is mounted just to the side of it), I’m not sure how to overcome this because the dropper lever would be really tough to reach if it was setup behind the display, maybe putting it on the right portion of the handlebar vs. the left?


More BULLS Reviews

BULLS Cross E8 Review

  • MSRP: $3,199
  • MODEL YEAR: 2018

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

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 Urban EVO Review

  • MSRP: $4,399
  • MODEL YEAR: 2018

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…...


  • MSRP: $7,399
  • MODEL YEAR: 2018

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

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

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

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…...


  • MSRP: $5,499
  • MODEL YEAR: 2018

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

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

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…...


  • MSRP: $2,899
  • MODEL YEAR: 2018

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

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

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 E2 Street Review

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

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

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…...


  • 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…...

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…...


  • 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…...

4 months ago

Will you be reviewing the 45kph version? I wonder how it compares and whether it has the power to go up as steep of a hill as this version

3 months ago

Great question Mike, I’m hoping to cover all of the 2018 Bulls models at some point. I’ll do my best to test how powerfully it climbs, my guess is that it would still be very capable. Looking at the Bosch CX vs. Speed motors, there is a drop in peak torque output, but it is still very capable. I’m not sure on the differences with Bulls, it may be the exact same motor hardware with slightly different firmware… or it could be a different winding setup inside.

Dan Dialogue
3 months ago

As always, I like your reviews. Regarding the dropper post lever, it’s actually installed incorrectly. If it were turned around, reaching the display wouldn’t a problem (I think). It’s a shame that Specialized has left some of their users stranded. Maybe you remember, but I damaged my controller in a crash and had no issue getting one from Bulls. That’s a good sign!


3 months ago

Awesome! I’m glad Bulls is treating you right. Thanks for the seat post lever positioning tips Dan! I feel like these guys are producing great looking products at a reasonable price and getting the shop support and customer service right. Getting first hand feedback is important so thanks again for taking the time to share it here ;)

2 months ago

I watched a ton of your videos and finally decided on the Bulls E-Stream AM 4, however your measured stand over height of 30.5″ for the medium does not match Bulls’ measurement of 820mm or 32.28″. I am 6′ with a 32″ inseam (in pant sizes). Should I go with the medium or the large? or What are your measurement for comparison. Your videos really helped introduce me to EMTBs and to narrow down my search from dozens to one! Thanks

2 months ago

Awesome! Glad the site helped you Oliver, I do my best to measure all of the stats independently but there are mistakes on here… I don’t know where, but I have found them before myself when doing updates. I feel that the specs listed here are accurate, but you might be able to check with a dealer or even email/call the folks at Bulls directly. It sounds like an important number for you to really know. My experience has been that my own measurements are often more accurate than the official company specs because I do them all myself by hand and don’t copy/paste year to year. That said, sometimes the company gives me a pre-production model with different tires or slightly different grips etc. and that can play in. I’d love to hear what you come back with, if my measurement “measures up” so to speak ;)

1 month ago

What is it with Bulls and frame size? I’d buy this bike tomorrow, but I’m 5’4.5″, and the frames start at 44 – ridiculous. Don’t they want to sell bikes to women and shorter men? They have very few bikes like this in a size for shorter folks. They’re missing out on a huge section of the market, as many women like myself want to get an e mtn bike to keep up with the men we ride with.

1 month ago

Hi Phridge… I feel ya. Have you seen their “ladies” mountain model called the Aminga TR 1? I reviewed it with a younger girl who was able to stand over and I try to record the “stand over height” for all of the products on the site to help give you an idea of what it takes to mount and stabilize. The Aminga has a 27″ stand over for the small 41 cm frame vs. 30.5″ stand over on the medium 49 cm E-Stream EVO AM 4 in this review.


Post a Comment

Your email address will not be published.

Lester Ma
3 weeks ago

Noisy bike also lots of clanging, what is that from?

siu c
2 months ago

What other brands and bike models will be using the Brose S motor?

James Baker
2 months ago

Great Review. I think we will start seeing a lot more of the Brose Motor. I've ridden them all and prefer the Brose for my own personal riding style. Brose needs to do a lot more marketing to bring awareness to their motor. They don't just make ebike motors. Brose is a German company that makes components for the Auto industry. Their parts are found in almost every other car made in the world. I see them as being a huge contender in the future and definitely a way for some of these bike brands to stand apart from each other since so many are using Bosch. The Bosch name seems to be overpowering the actual bike brand in some cases. Do you know what other brands are using Brose in the U.S.? I test rode most of the Bulls line at the Expo and the Seattle bike show. Bulls is a great brand for sure.
I am excited for your next review!!

Mole Js
3 months ago

where is the trailhead ,thanks Court

Dmitri Nesteruk
3 months ago

The cables are right in the way of the front light.

Mark Elford
3 months ago

Fun trail video,and very decent ebike.

Steve Petttyjohn
3 months ago

At minute 28 I thought maybe Ricky jacked your bike!

3 months ago

My lord the Brose screen is more crude than some of the chineese bafang displays... Although I am the advocate of just having a bluetooth dongle and with the app and physical up down assist buttons, with a usb out.

Flo Mo
3 months ago

You test the most beautiful and best electric bicycles. And you make it so fantastic because you are authentic. Court, a big compliment for your great videos. Everyone should buy an electric bike today. The world needs people like you for that. Many Thanks.

Carl McDonald
3 months ago

Nice bike.

Armando Aleman
3 months ago

Evangelical Christian Friend, an excellent description of the product but I personally prefer "LUNA CYCLE , My second option perhaps so the most discreet.
Pentagon Pentagon Pentagon!

Armando Aleman
2 months ago

benzoesan sodu I'm AMERICAN not EU WHO cares about EUROPEAN Union!

benzoesan sodu
2 months ago

Luna cycle only can copy otcher product. They copied in 90% Audi ebike and just have in offer rebrander Bafang engines. Ofc they dont offer warranty. Additional 2 years warranty for 900$???? On Bulls, Haibikes and all ebikes 250W you have free 24month warranty in EU.

Ted Kidd
3 months ago

What nice trails.

Ted Kidd
3 months ago

Try dropping your heals some...

Stefanie VanderLaag
3 months ago

Ted Kidd. What does dropping your heels do?

Ted Kidd
3 months ago

Bottom bracket height comparison?

We have Levo's (I have 3) and even after raising forks to 160 and installing shorter cranks there are WAY too many strikes.

Not getting another bike until they start making higher BB's.

These one bike review videos were great when ebikes we're complete unicorns. Now most brands have them, and many are on to 2nd and third gen.

Might be interesting now to have videos that compare bikes across similar use class and price point.

Larry Conger
3 months ago

Ted Kidd I have worse pedal strikes on other bikes, 2017 Turbo Levo is a great bike, but the pedal Strikes aren’t that big of a problem

3 months ago

Liked the actual riding and that Brose motor seemed capable. The rides are more informative than quick spin around the parking lot. But think a camera upgrade is needed - colors just aren't as accurate/vibrant as other YouTube channels. I watch BKXC and Single Track Sampler etc and their vids are noticeably nicer. Really need a channel that takes your format farther - put experienced mtn bikers on emtbs riding trails and comparing.

Bob A
3 months ago

Awesome ride in sunny Cal. LaLa land at its best. How great it must be to live nearby in God's country. The Brose' S motor looks like a great performer indeed. I am not a big fan of a joystick style display interface. I seem to lean more towards either the old style Brose' interface or the Bosch Intuvia. The new Bosch interface looks more fragile than the Brose' IMHO. Enjoyed the ride.

3 months ago

Excellent review. The ride-along is a great addition, it really gives you a (virtual) test ride especially if you've test ridden some bikes. Bulls and Haibike are on my short list. I do strongly prefer Bosch for its power and shift sense, but this review has convinced me to consider Brose.

3 months ago

You are really getting around these days. Great to see and I am sure you are enjoying the different locations. Great review and a very well made ebike. Cheers!

David Stump
3 months ago

That was a beautiful ride. Nice job!

Larry Conger
3 months ago

Turbo Kenevo, pls get a review done, Court, love to see your take, need longer warranties, love the new turbo Levo has a up & down pedal assist buttons now