Name: BULLS COPPERHEAD EVO AM 3 Review
Item: BULLS COPPERHEAD EVO AM 3
Author: Court Rye

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BULLS COPPERHEAD EVO AM 3 Review

Bulls Copperhead Evo Am 3 Electric Bike Review

Bulls Copperhead Evo Am 3 Fourth Generation Bosch Cx Motor

Bulls Copperhead Evo Am 3 Fox Float Dps Air Suspension Rear 150mm Travel

Bulls Copperhead Evo Am 3 Handlebar Sram Slsx Eagle Trigger Shifters Bosch Purion Display

Bulls Copperhead Evo Am 3 Fox 36 Float Rhythm Air Fork

Bulls Copperhead Evo Am 3 Monkeylink Magnetic Headlight Option

Bulls Copperhead Evo Am 3 Magura Mt Trail Hydraulic Disc Brakes Magura Storm 203 Rotors

Bulls Copperhead Evo Am 3 Selle Royal Vivo Saddle Limotech Jovial Dropper Post

Bulls Copperhead Evo Am 3 Sram S Sync 2 Narrow Wide 34t Chainring

Bulls Copperhead Evo Am 3 Sram Sx Eagle 11 52 Cassette

Bulls Copperhead Evo Am 3 Gen 4 Bosch Performance Line Cx Motor Bottom

Bulls Copperhead Evo Am 3 Bosch 4 Amp Ebike Charger

Bulls Copperhead Evo Am 3 Bosch Ebike Charger Bottom

Bulls Copperhead Evo Am 3 Stock Left Side

Bulls Copperhead Evo Am 3 High Step Black

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 more nimble and responsive than full 3.0" plus sized tires, the wheels are stiff and responsive thanks to Boost hub spacing, sturdy 15mm and 12mm thru-axles, and premium DT Swiss wheels with reinforcement eyelets
Unique dropper seat post from Limotech (called Jovial) now incorporates a bit of suspension, quad piston hydraulic disc brakes from Magura are designed to cool fast and function well at high speeds with large 203mm ebike-specific rotors, impressive 12-speed SRAM drivetrain with 11-51 tooth cassette range
Responsive Bosch CX motor delivers an "all in one" eMTB drive mode designed to keep you focused on riding and shifting gears vs. adjusting power settings, the Bosch Purion display panel is more limited than Intuvia and doesn't have USB charging options, the bike is a bit heavier than some in this category but BULLS improved the battery cover design (making it lighter and cheaper + easier to replace)

Make:

BULLS

Model:

COPPERHEAD EVO AM 3

Price:

$5,899

Body Position:

Forward

Suggested Use:

Trail, Mountain

Electric Bike Class:

Pedal Assist (Class 1)

Learn more about Ebike classes

Warranty:

2 Years Motor and Battery, 5 Years Frame

Availability:

United States, Canada

Model Year:

2020

Total Weight:

56.5 lbs (25.62 kg)

Battery Weight:

7.7 lbs (3.49 kg)

Motor Weight:

6.3 lbs (2.85 kg)

Frame Material:

6061 Aluminium Alloy

Frame Sizes:

17.32 in (43.99 cm)18.89 in (47.98 cm)

Geometry Measurements:

Small 44cm: 17.5" Seat Tube, 22" Reach, 29" Stand Over Height, 30.25" Width, 76.5" Length

Frame Types:

High-Step

Frame Colors:

Matt Black with Gray Accents

Frame Fork Details:

Fox 36 Float Rhythm Air Suspension, 150mm Travel, Compression Clicker, Rebound Adjust, 36mm Stanchion Diameter with Black Titanium Nitrade Coating, 51mm Rake, Boost 110mm Hub Spacing, 15mm Thru-Axle with Quick Release

Frame Rear Details:

Fox Float DPS Air Suspension, 150mm Travel, Compression Adjust (1, 2, 3), Rebound Clicker, Boost 148mm Hub Spacing, 12mm Thru-Axle with 6mm Hex Bolt

Attachment Points:

MonkeyLink Magnetic MonkeyBottle Mount on Downtube, MonkeyLink Bracket on Stem and Seat Collar for Lights or Fender

Gearing Details:

12 Speed 1x12 SRAM SX Eagle RD-SX-1 Derailleur with Roller Clutch, SRAM SX Eagle CS-PG-1210 11-52 Tooth Cassette

Shifter Details:

SRAM SLSX Eagle Triggers on Right (One-Way High, Four-Shift Low)

Cranks:

FSA, Aluminum Alloy, 165mm Length, SRAM S Sync 2 34 Tooth Narrow-Wide Chainring with Mr Control Plastic Guide

Pedals:

BULLS Branded Wellgo Resin Platform

Headset:

FSA 1.5 ACR, Internal, Sealed Cartridge, Straight 1-1/2"

Stem:

Calloy AS-MTV-I, MonkeyLink Magnetic Interface, Aluminum Alloy, 50mm Length, 25mm Rise, 9° Bend, 31.8mm Clamp Diameter, Two 10mm Spacers, One 5mm Spacer

Handlebar:

BULLS Branded Calloy, Aluminum Alloy, Low-Rise, 760mm Width, 25 mm Rise, 9° Bend

Brake Details:

Magura MT Trail Hydraulic Disc with Magura Storm MDR-P 203mm Rotors, Quad-Piston Calipers, Magura MT5 Two-Finger Levers with Adjustable Reach

Grips:

Velo, Flat Rubber, Locking

Saddle:

Selle Royal Vivo

Seat Post:

Limotech Jovial Dropper (100mm or 125mm Travel)

Seat Post Length:

250 mm

Seat Post Diameter:

30.9 mm

Rims:

DT Swiss H1900 Spline, Double Wall, Aluminum Alloy, ETRTO 584x35c, 40mm Outer Width, 28 Hole, Reinforcement Eyelets

Spokes:

DT Hybrid 1, Stainless Steel, 14 Gauge, Black with Silver Nipples

Tire Brand:

Front: Schwalbe Magic Mary, 27.5" x 2.8" (70-584), Schwalbe Hans Dampf, 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 and Speedgrip Compound, EVO Evolution, APX Reinforced, TLE Snakeskin

Tube Details:

Presta Valve

Accessories:

Velo VLF-613 Rubberized Slap Guard, Optional Bosch Smartphone Hub (Replaces Display, $260)

Other:

Locking Removable Downtube-Integrated Battery Pack, 1.7lb 4 Amp Charger, Maximum Cadence > 120 RPM Motor Support, 175mm Q-Factor, ABUS Locking Core (Keyed-Alike Code Card)

Motor Brand:

Gen 4 Bosch Performance Line CX

Motor Type:

Mid-Mounted Geared Motor

Learn more about Ebike motors

Motor Nominal Output:

250 watts

Motor Torque:

75 Newton meters

Battery Brand:

Bosch PowerTube 625 3200Ma 18650 Cells

Battery Voltage:

36 volts

Battery Amp Hours:

17.4 ah

Battery Watt Hours:

626.4 wh

Battery Chemistry:

Lithium-ion

Charge Time:

5.5 hours

Estimated Min Range:

40 miles (64 km)

Estimated Max Range:

100 miles (161 km)

Display Type:

Bosch Purion, Fixed, 1.75" Grayscale LCD, Buttons: +, -, Walk Mode, (Hold + for Lights, Hold - to Cycle Through Readouts, Hold - and Press Power to Change Units)

Readouts:

Speed, Assist Level (Eco, Tour, eMTB, Turbo), Battery Level (1-5), Trip Distance, Total Distance, Estimated Range, Lights

Display Accessories:

Micro-USB Port for Diagnostics and Software Updates Only

Drive Mode:

Advanced Pedal Assist (Measures Rear Wheel Speed, Pedal Cadence, and Pedal Torque over 1,000x Per Second, Power Output Relative to Pedal Input: Eco 60% 40Nm, Tour 140% 50Nm, eMTB 140% to 340% 75Nm, Turbo 340% 75Nm)

Top Speed:

20 mph (32 kph)

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Make or Model

Model Year

Body Position

Suggested Use

Frame Type

Drive Mode

Availability

Price Range

$0 (0 €)$18,000 (16,920 €)

Total Weight

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

Top Speed

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

Battery Watt Hrs

0 watt3,456 watt

Frame Size

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

Motor Power

0 Newton meters250 Nm

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To run the forums, host the website, and travel, I charge a universal service fee for my reviews. This in-depth review was sponsored by BULLS North America. My goal is to be transparent and unbiased with you, this video and writeup are not meant to be an endorsement of BULLS products. I welcome your corrections, additions, and feedback in the comments below and the BULLS electric bike forums.

Observations:

Bosch Gen 4 motor no longer uses a reduction gear, the standard sized chainring freewheels without producing any drag and the Performance Line motors don’t clunk when you stop pedaling
BULLS really stepped up their game with the charging port and battery locking core position, both up high and on the right side of the frame with a leash so the cover won’t go missing
The Powerpack 625 weighs a pound more than the 500 (~14% heavier) but gives you 25% more battery capacity! It’s a bit of a trade-off for an all mountain electric bike, where being able to lift the bike, handle it on rough terrain, and put it on car racks makes weight savings important… but it means you can use eMTB and Turbo assist more frequently without running out of juice

Pros:

BULLS moved the charging port and locking core for the battery up high and on the right side of the frame, exactly where they should be! This means you don’t have to bend down to charge or unlock and if you lay the bike down on the non-drive side (as you should to protect the derailleur) you can still access them! Great job here BULLS, especially given your choices on prior-year models
Customized tire mix, BULLS has chosen the Schwalbe Magic Mary up front with softer rubber and larger knobs to improve steering, and the Schwalbe Hans Dampf in the rear with harder rubber and smaller tighter knobs to increase surface area and traction when pedaling
High performance Fox air suspension with thicker stanchions to reduce stiction by reducing flex… the burlier fork provides added strength for the Boost hub spacing and larger/heavier plus sized tires
I was told that Bulls does not use the official split-pivot rear suspension design but it looks very close and provides the same sort of isolation and vertical travel vs. an arched movement which can change your chain tension and produce kickback… whatever it is, I like it
Beautiful looking bike, everything is blacked out (rims, spokes, suspension stanchions, dropper seat post stanchion) and the fork is color matched too… black is a popular color for ebikes because they tend to have more cables, display panels, and motor casing exposed
The COPPERHEAD EVO is available in two frame sizes for optimal fit and ride control, this is part of what separates BULLS and other high-end brands from more affordable products in the space today, I covered the smaller 44cm frame in this video review and in the photos but they also sell a 48cm frame (which I would have preferred because I was maxing out the dropper height and not quite getting full leg extension given my 31″ inseam length)
This model comes with MonkeyLink magnetic bottle interface as well as headlight, tail light, and rear fender mounts! Not everyone will need lights for an all mountain electric bike, but if you do add them, they will run off of the main battery pack… and of course, you can remove the magnetic bottle adapter on the downtube to get access to standard threaded eyelets for an aftermarket water bottle cage or accessory
Larger tougher slap guard than many competing electric mountain bikes, it only covers the top of the chain stay but is very long and well mounted, I also appreciate the small/lightweight plastic motor protector at the bottom bracket, and plastic chain guide that helps to reduce drops and protect pants
Adding to the reliability of the plastic chain keeper is a 34 tooth narrow-wide chainring from SRAM that really locks onto the chain, so pedaling and motor power and transferred more efficiently… it’s a tight drivetrain
Huge 11-52 tooth spread on the 12 speed SRAM drivetrain, this gives you plenty of range to work with for climbing and reaching/maintaining higher downhills speeds
BULLS updated their battery cover design to a more universal black plastic, which is much lighter than the older aluminum alloy shields that were paint matched… these are lighter, cheaper, and much easier to replace
I love that BULLS added provisions for mounting a kickstand at the left rear portion of the frame… most people won’t do this for real mountain biking, because it would bounce up and down on the rough terrain, but it’s nice for urban and light trail riders who want a reliable way to store the bike in a crowded garage
stiff thru-axles and wider Boost hub spacing provide support for the heavier rims and tires, the spoke bracing angle is sturdier as a result, and you might experience less disc brake zing because the hubs won’t flex like a 9.8mm skewer, I also love the name brand DT Swiss rims with reinforcement eyelets which are less likely to crack under pressure
Extra stiff e-bike specific Storm model disc brake rotors from Magura, the larger 203mm size front and rear rotors cool faster and provide a mechanical advantage for the heavier build of this bike, quad piston calipers support a larger brake pad that grabs more surface area and cools faster than a dual piston setup
The Limotech Jovial dropper seatpost provides a bit of shock absorption, which can come in handy if you take an unexpected hit with the saddle in a high position… it’s not much, it doesn’t rattle or anything, it just springs down a little with pressure
The Bosch Performance Line CX motor has gotten a lot smaller and lighter for the fourth generation, weighing 2.5lbs less than Gen 3, it still offers 75 newton meters of peak torque, shift detection, and eMTB mode which provides a full range of power as pedal torque increases, so you don’t have to think about adjusting the power while also adjusting your gears
The Bosch ebike motor controller measures rear wheel speed, pedal cadence, and pedal torque over 1,000 times per second and is one of the more reliable and reputable ebike drive systems around, they partner with Magura to provide great customer support across North America and offer a solid two-year comprehensive warranty
BULLS has integrated the magnet for measuring rear wheel speed into the disc brake rotor, so your wheel can stay more balanced, spokes won’t get loose, and the magnet itself won’t get spun out of place or bumped as easily… the reader is also more protected
It looks like the bike comes with decent plastic platform pedals, locking semi-ergonomic Velo grips, and a more comfortable Selle Royal Vivo saddle
With the more compact motor and internally mounted Bosch Powertube battery pack, the bike is pretty stealthy, it doesn’t stand out… the cables are mostly internally routed and the ebike system weight is kept low and center for better handling
I noticed a couple of unique hardware upgrades on the BULLS COPPERHEAD EVO AM 3 including a rectangular spacer and stem system that routes cables internally… the rectangle spacers split down the middle so you can add and remove them without disconnecting anything, and the thicker 1-1/2″ straight head tube vs. tapered 1-1/8″ to 1-1/2″ I see elsewhere
The Bosch CX motor does use more electricity and produce more noise because of the zip and torque on offer so I like that they went with the high-capacity Bosch Powerpack 625 and that you get the 4 amp charger for faster turnaround time, the charger is relatively lightweight, compact, and can fill the battery on or off the frame without the need for any dongles… the proprietary plug interface is durable and won’t get confused with other charging devices you might own… it’s my favorite charger!
You get the nicest Bosch battery pack on offer for this generation of products, with 625 watt hours on offer, you can ride further without the need for a charge… or you can use higher levels of assist longer without running out of juice, the pack is durable, standardized across other Bosch powered electric bicycles, and has a two-step release so it won’t tumble out if you want to remove it to lighten the weight of the bike or just store it separately (avoid extreme heat which can damage cells and extreme cold which limits the usable capacity temporarily)
The battery pack locks into the frame using an ABUS core with PLUS keys that can be matched to ABUS locks, it’s a great setup and one of the highest-end locksets around, more info on the official ABUS website here
BULLS has a vast network of dealers in the US and Canada, they entered into the North America market from Germany (and Europe) around 2016 and have a strong management and field team, I feel confident that their brand will persist and grown here while some other companies have been less stable, having access to dealers for fitting, tuneups, and post-purchase support is part of what makes this a more expensive bike but also gives you a great end-user experience
The Bosch Purion display panel is a bit smaller and less feature rich than the Intuvia or Kiox, but it still provides dynamic range readouts, which can help reduce range anxiety on longer bike rides, I like how small and simple it is to use… and some shops will special order other Bosch displays and help you upgrade from this if you want more stats or a larger or color display
All of the Gen 4 Bosch Performance Line motors now offer 120+ RPM pedal support, meaning that the motor can keep up with greater than 120 pedal strokes per minute, so you won’t be left without power when downshifting and spinning approaching a steep hill
I like that the BULLS electric bikes have walk mode enabled, it can really be useful for climbing a steep section of trail if you get off your bike (especially if you’re wearing clip-in shoes) or if you get a flat tire, just press the walk mode button on the lower edge of the Purion display and then hold plus to make it go

Cons:

It’s great that the drivetrain has such a wide spread of gears, because the bike is fairly heavy at ~56 pounds (~25.4kg) which comes back to the medium sized 2.8″ wide plus sized tires, longer travel 150mm suspension, straight 1-1/2″ head tube, and high capacity Bosch Powertube 625 vs. 500 on other models
Only the front wheel offers quick release, the rear wheel uses a 6mm hex bolt, so you’ll need a tool to perform trail maintenance, there’s not toolkit built onto the bike or secret tools stored under the stem cap or elsewhere like we’ve seen on some of the Specialized models
The SRAM trigger shifter offers a one-direction high lever vs. two-direction on many Shimano parts that I test… but at least you get a four-shift low lever for dumping gears when approaching a steep hill. I like that SRAM didn’t nerf this shifter like so many others that I’ve seen on ebikes where you only get one gear change at a time (for concern about damaging the drivetrain) this may be the result of pairing with the Bosch drive system that includes automatic shift detection
Despite moving away from the reduction gear (with smaller chainring) the high-powered Bosch ebike motors still produce a fairly audible whine at high RPM and high power settings, it’s not a deal killer, but seems a bit louder than Brose at times
Perhaps it was just the demo bike, or a feature that is being fine tuned still, but the battery took a bit of extra time and effort to mount back into the frame… I feel like we had to twist the key to allow the battery to click into place and this took two of us to accomplish, while stabilizing the bike, it would be nice if you could just push and have the battery click into place seamlessly and not have to mess with the key at all
Given the high capacity battery pack, it would be nice to have a USB port to plug a phone in for use with GPS, music, or other portable electronics… the Bosch Purion display panel has a Micro USB port, but this is only usable for data transfer and updates, not charging, consider swapping the display for a Bosch Intuvia or Kiox which do have active Micro USB ports, dealers can help with this for a hardware and service fee $150+
This is a minor thing, but the chainring doesn’t cycle backwards when you backpedal, this changes how drivetrain service is done… you basically need a bike maintenance stand or a friend to lift the bike and pedal to clean and lubricate the chain. One positive note here, is that Bosch has setup the bottom bracket with some resistance so the cranks won’t spin as freely backwards, which could lead to more shin scrapes and shin bumps otherwise
Be careful when lifting and transporting the Powertube battery because it does not have an integrated handle like the Powerpack mid-frame and rear-rack models, I do appreciate how it clicks down one step before completely coming off the bike, you are less likely to drop it when removing

Useful Resources:

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MSRP: $5,099
MODEL YEAR: 2019

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

BULLS GRINDER EVO Review

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

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

BULLS AMINGA EVA TR 2 Review

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

BULLS E-STREAM EVO 45 AM Review

MSRP: $5,499
MODEL YEAR: 2019

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

BULLS STURMVOGEL EVO Street Review

MSRP: $3,999
MODEL YEAR: 2019

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

BULLS Cross Lite EVO Review

MSRP: $4,399
MODEL YEAR: 2019

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

BULLS CROSS E8 Review

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

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

BULLS CROSS MOVER SPEED Review

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

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

BULLS E-STREAM EVO AM 4 Review

MSRP: $5,399
MODEL YEAR: 2018

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

BULLS URBAN EVO Review

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

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

BULLS SIX50 EVO AM 4 Review

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

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

BULLS LACUBA EVO E45S Review

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

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

BULLS E-CORE Di2 FS 27.5+ Review

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

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

BULLS LACUBA EVO E8 Review

MSRP: $3,799
MODEL YEAR: 2018

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

BULLS MONSTER E FS Review

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

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

BULLS SIX50 EVO AM 3 Review

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

BULLS CRUISER E Review

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

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

BULLS AMINGA TR 1 Review

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

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

BULLS TWENTY4 E Review

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

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

BULLS CROSS E Review

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

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

BULLS E-STREAM EVO FS 2 27.5 Plus Review

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

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

BULLS SIX50 E 1.5 Review

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

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

BULLS CROSS LITE E Step-Thru Review

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

BULLS SIX50+ E FS 3 Review

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

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

BULLS E-STREAM EVO 45 FS Review

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

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

BULLS E-STREAM EVO 3 Carbon 27.5 Plus Review

MSRP: $4,599
MODEL YEAR: 2017

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

BULLS DAIL-E GRINDER Review

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

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

BULLS SIX50 E 2 STREET Review

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

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

2017 BULLS LACUBA EVO E8 Review

MSRP: $3,999
MODEL YEAR: 2017

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

BULLS E-STREAM EVO FS 3 27.5 Plus Review

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

2017 BULLS MONSTER E FS Review

MSRP: $5,299
MODEL YEAR: 2017

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

BULLS LACUBA EVO E45 Review

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

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

BULLS E-STREAM EVO FS 3 27.5 Review

MSRP: $4,699
MODEL YEAR: 2016

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

BULLS SIX50 E FS 3 RSI Review

MSRP: $4,599
MODEL YEAR: 2016

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

2017 BULLS MONSTER E S Review

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

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

BULLS OUTLAW E45 Review

MSRP: $3,999
MODEL YEAR: 2016

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

BULLS STURMVOGEL E EVO Review

MSRP: $3,699
MODEL YEAR: 2016

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

BULLS TWENTY9 E FS 3 RSI Review

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

BULLS CROSS LITE E Review

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

BULLS E-STREAM EVO FS Enduro 27.5 Review

MSRP: $5,399
MODEL YEAR: 2016

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

Matt

4 years ago

Out of curiosity, when comparing the Copperhead am 2 and 3. Does the Fox suspension make a huge difference?

Court

Hi Matt, I really like Fox. Getting the adjustability, the high quality smooth sliding stanchions, and just the name and branding does add a lot of value to me. It might come down to price sensitivity. The upgraded Fox suspension is better to pay for now vs. waiting to try to upgrade or something later. If this is going to be your one ebike, and you are drawn to the upgraded suspension, I’d probably go for it. That’s just me… I spend a lot on bicycles because they are fun, social, and healthy… that makes it worthwhile ;)

Jonas UC

2 years ago

Wow, the BULLS COPPERHEAD EVO AM 3 looks like an impressive electric mountain bike! The 150mm air suspension from Fox and the thicker stanchions definitely give it an edge in terms of off-road performance, and the internal Powertube 625 battery is a nice touch, offering 25% more range. The mid-sized 2.8″ plus-sized tires seem like a good balance between traction and agility, and the Boost hub spacing and premium DT Swiss wheels should make for a responsive ride.

I also appreciate the unique dropper seat post from Limotech with built-in suspension and the powerful quad piston hydraulic disc brakes from Magura. The 12-speed SRAM drivetrain with a wide range of 11-51 tooth cassette is impressive as well.

The Bosch CX motor sounds like it delivers great power and the “all in one” eMTB drive mode is a nice touch. However, it’s a bit disappointing that the Purion display panel is more limited than the Intuvia and doesn’t have USB charging options. That being said, the bike does seem to be a bit heavier than some in its category, but it’s good to see that BULLS has improved the battery cover design to make it lighter, cheaper, and easier to replace. Overall, it seems like the BULLS COPPERHEAD EVO AM 3 is a solid choice for all-mountain electric biking.

What do you think of the Specialized Levo Comp as an alternative to the BULLS COPPERHEAD EVO?

Hi Jonas! I really like the Specialized eMTB offering. They look great, have some beautiful frames, the Body Geometry touch points feel good to me, and I appreciate their dealer network. I’m partial to Bosch ebike systems for being so reliable, but I think the Specialized Brose partnership has been in place for several years now, so they might have worked out any kinks. I heard about some issues with the older BLOKS displays and the Gates Carbon Drive belt inside their motors… but this is all second hand from different shops. BULLS is using standard Bosch components that are not customized, and although it doesn’t look quite as refined, I do think the big benefit is reliability and being able to work with any Bosch Certified dealer vs. just Specialized dealers. Their support is usually for 10 years vs. having hardware get changed rapidly and phased out with Specialized, based on what I’ve seen over the years. I’d be happy with either, hope this perspective helps you zero in on the right product for your needs.