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COPPERHEAD EVO AM 4 750
Designed for the pros, but available to everyone. Featuring a 12-speed XTR drivetrain, mullet wheel setup, four-piston brakes, a coated dropper post, and other premium components, the AM4 stays ahead of the competition.
$4,499.00
$5,999.00
Save $1,500
FEATURES
COPPERHEAD EVO AM 4 750
- The BULLS Copperhead EVO AM 4 750 is our top-shelf all-mountain eMTB, engineered to dominate demanding trails with power, precision, and confidence. With a rugged build and pro-level specs, it’s your ticket to take on any terrain—uphill, downhill, or full send mode.
Motor and Battery
- Motor: Bosch Performance Line CX motor with 85 Nm of torque for aggressive acceleration and precise control on any incline or descent.
- Battery: Bosch PowerTube 750Wh battery, fully integrated into the frame for a clean look and epic range. Full charge in approx. 6 hours with the Bosch 4A charger.
Suspension and Frame
- Fork: SR Suntour Durolux 36 RC2 Boost with 150mm of travel to soak up big hits and gnarly terrain.
- Rear Shock: SR Suntour RS19 TRIAir 3CR delivering 150mm of smooth, responsive travel in the rear.
- Frame: Aluminum 6061 frame with internal cable routing. Sizes: 41 cm / 44 cm / 48 cm / 54 cm to fit a wide range of riders.
Drivetrain and Brakes
- Drivetrain: Shimano XTR 12-speed gearing offers crisp shifting and a wide range to conquer technical climbs and high-speed descents.
- Brakes: Shimano BR-M6120 4-piston hydraulic disc brakes with 203mm rotors front and rear for confident braking in all conditions.
Wheels and Tires
- Wheels: Mullet setup with a 29" front and 27.5" rear wheel for a killer mix of rollover capability and playful handling.
- Tires: Schwalbe Magic Mary (front) and Hans Dampf (rear), Super Gravity casing, 2.6" wide—maximum grip and control wherever you ride.
Additional Features
- Remote: Bosch LED Remote with Bluetooth connectivity—syncs with your phone and displays ride data in real-time. Easy to navigate with your thumb, even on the move.
- Dropper Post: Limotec A1-Z dropper post for on-the-fly seat height changes that adapt to the trail.
- Pedals & Saddle: Comes with BULLS MTB pedals and a Selle Royal Vivo Ergo saddle for grip and comfort on long rides.
Technology and Design
- MonkeyLink Ready: Quick-connect system for lights and fenders—snap-on, snap-off convenience.
- Class-1 eBike: Pedal assist up to 20 mph, trail-legal and ready for all-day exploration.
Key Takeaway
- The Copperhead EVO AM 4 750 is built for serious riders who want pro-level performance in a smart, stylish, and rugged package. From bike park laps to backcountry missions, this eMTB is ready when you are.

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 |

SP Connect Cap for Your Smartphone
Turn your smartphone into your eBike's control hub with the Bulls SP Connect Cap! This secure handlebar mount keeps your phone steady, even on rough rides, giving you instant access to speed, navigation, and ride data. Pair it with the Bosch Smart System for seamless connectivity via the eBike Flow app—customize settings, track performance, and get updates on the go. Plus, your charging ports stay clear, so you can power up while riding.

Bosch Performance CX Smart System Motor
The Bosch Performance Line CX (Smart System) is like having a mountain goat in your frame—strong, smart, and built for steep climbs. With up to 85 Nm of torque, it gives you serious kick when you need it most. It’s perfect for trails, hills, and anything in between.This motor doesn’t just push—it thinks. It syncs with your eBike’s system for smooth updates, custom riding modes via the Flow app, and even a Smart Walk Assist to help you hike the bike uphill. Need to stop on a slope? The Hill Hold has your back. And when it’s parked, the eBike Lock uses your phone as a digital key—no keychain jingle required. In short: Power, brains, and zero drama. Just pure eBike fun.

Bosch Remote Smart System Display
The Bosch LED Remote (Smart System) puts eBike control right at your fingertips. With a smart, ergonomic design, it connects to the eBike Flow app, letting you monitor battery, speed, and ride modes—all without taking your hands off the handlebars. Its adaptive LED brightness keeps visibility sharp, and features like Smart Walk Assist and Hill Hold help tackle steep terrain. Plus, eBike Lock turns your phone into a digital key for added security.

Bosch PowerTube 750 Smart System Battery
The Bosch PowerTube 750 (Smart System) packs 750Wh of energy for longer, more demanding rides, delivering 20% more range than the PowerTube 625 while keeping a sleek, integrated design. Its advanced Battery Management System (BMS) ensures safe, efficient performance, protecting against overheating and deep discharge. Charge to 50% in 2 hours, full in 6 with the 4A charger. Plus, Smart System compatibility allows over-the-air updates and custom ride settings.