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COPPERHEAD EVO AM 3 750
Built for the rider you're aspiring to be. A 12-speed drivetrain, rear shock with a reservoir, and a coated dropper post will have you keeping pace with the pros.
COPPERHEAD EVO AM 3 750
- The Copperhead EVO AM 3 750 is hot on the heels of our pro-level AM 4—built to race, rip, and rail any trail you throw at it with Bosch Smart System power and dialed enduro-ready components.
Motor and Battery
- Motor: Bosch Performance Line CX Smart System motor with up to 85 Nm of torque, designed for punchy climbs, tight switchbacks, and full-send descents.
- Battery: Integrated Bosch PowerTube 750 Wh battery delivers long-range performance with a sleek, low-center-of-gravity design. Approx. 6-hour full charge.
Suspension and Frame
- Fork: SR Suntour Durolux 36 RC2 Boost with 150mm of travel for buttery smooth control on steep, rocky descents.
- Rear Shock: SR Suntour RS19 TRIAir 3CR with 150mm of travel, keeping the rear wheel glued to the trail.
- Frame: Tough 6061 aluminum frame with internal cable routing. Sizes: 41 / 44 / 48 / 54 cm.
Drivetrain and Brakes
- Gears: Shimano XT 12-speed drivetrain delivers lightning-fast shifts and a wide gear range for brutal climbs and fast flats.
- Brakes: Shimano BR-M6120 hydraulic disc brakes with 203mm rotors front and rear for serious stopping power no matter the terrain.
Wheels and Tires
- Wheel Setup: Mullet configuration with 29" front and 27.5" rear wheels offers the best of both worlds—roll-over confidence up front and responsive control in the back.
- Tires: Schwalbe Magic Mary (front) and Hans Dampf (rear) 2.6" Super Gravity tires bring mega grip and trail armor toughness.
Additional Features
- Remote: Bosch LED remote with Bluetooth connectivity for syncing ride data to your phone. Intuitive, easy to navigate, and weather-ready.
- Dropper Post: Limotec A1-Z dropper post lets you adjust saddle height on the fly for max control on steep descents and tech sections.
- Pedals and Saddle: BULLS MTB pedals and Selle Royal Vivo Ergo saddle keep you locked in and comfortable all ride long.
Technology and Design
- MonkeyLink Ready: Integrated MonkeyLink system allows fast mounting of lights, fenders, and accessories.
- Class-1 eBike: Pedal-assist up to 20 mph for full trail-legal performance.
- The Copperhead EVO AM 3 750 is built for riders who want elite-level trail performance with race-capable specs, monster grip, and next-gen Bosch power—all packed into a ride that’s just plain fun to hammer.
BULLS Review: With only small concessions, the Copperhead EVO AM 3 offers all the motor and suspension performance of its top shelf big brother, while keeping some scratch in your pocket.
Electric Bike Report: This Copperhead EVO AM 3 is a surprisingly refined trail ripper—delivering Bosch-powered punch and supple suspension in an approachable, value-packed package.
| Frame Size | 41(CM) | 44(CM) | 48(CM) | 54(CM) | ||
|---|---|---|---|---|---|---|
| Seat Tube Length | A | 410mm | 440mm | 480mm | 540mm | |
| Top Tube Length | B | 630mm | 630mm | 640mm | 665mm | |
| Chain Stay Length | C | 445mm | 445mm | 445mm | 445mm | |
| Bottom Bracket Offset | D | 5mm | 5mm | 5mm | 5mm | |
| Head Tube Length | E | 120mm | 120mm | 130mm | 140mm | |
| Head Tube Angle | α | 66° | 66° | 66° | 66° | |
| Seat Tube Angle | β | 75° | 75° | 74° | 74° | |
| Standover Height | 800mm | 830mm | 860mm | 890mm | ||
| Wheelbase | 1237mm | 1237mm | 1244mm | 1269mm | ||
| Reach | 465mm | 465mm | 467mm | 489mm | ||
| Stack | 615mm | 615mm | 624mm | 633mm | ||
Transform Your Ride: Using Your Smartphone as a Display with the Bulls SP Connect Cap and Bosch Smart System
Bosch Performance CX Smart System Motor
Bosch Remote Smart System Display
Bosch PowerTube 750 Smart System Battery
Customer Reviews
I was skeptic of buying this bite from online at first but the more digging into the company I found that they were a legit company I ordered the bike and it shipped to the dealer they assembled it and after picking it up and riding it for 30 miles it's been a blast great bike suspensions awesome long battery life highly recommend.
Oi! Bit the bullet at 53, being a die hard +50 mile a week mountain biker in Tahoe for the last 30+ years and losing some uphill motivation and gusto the last two years.
This bike RIIIIIPS!!!! Really really like the how the fork dials up and runs, a little more flex than a 20mm axle Fox 36 when straight out mobbing. The rear shock is pretty smooth and locks out near fully with a decent platform for climbs, likely keeping it.on there. Well appointed with XT components and tenacious Schwalbe tires f/r that hook up! Feel like I stole this bike at the sale price and slapping a 160mm Fox 38 up front with the money saved. Literally rides like my older S-brand 26" Enduro that I absolutely cherished and spanked to death. Oh yeah, it goes up real nice and the range is insane!
I went from hardly leaving the house to purchasing one of these as my first proper bike in May of 2025 and rode 500 miles by September. The amount of fun to be had on these bikes is endless and worth every penny. This bike changed my life for the better and I am forever grateful to own one! 5'9 and 210-220 lbs and the Medium frame is perfect sizing.
Hayden,
We are so stoked to be going on those rides with you!
The Copperhead AM 3 is a killer all mountain rig that you can shred now and grow with.
Have the most fun ever!
I fell in love with the way this bike performed on my first ride. I had to name her Betty!! it was easy to apply the assist on the fly, and she climbs like a goat. I had to show her off to my coworkers and told them if they are looking to buy an ebike, look no further.
We are so glad Betty found a forever home. Happy trails you two.
Great Bike
Troy, We are super happy that you're happy. See you on the trail!