COPPERHEAD EVO AM 1.5
The Copperhead EVO AM 1.5 is a carry-over from the previous Copperhead EVO AM line up, for those who prefer a 27.5 platform to the current MX/mullet spec.
This eBike offers a robust design and high-quality components, making it an excellent choice for both seasoned riders and those new to the world of eMTBs. Here’s a detailed look at its features:
DriveUnit: BOSCH Gen4 Performance CX (85 Nm)Battery: BOSCH PowerTube 625 WhCharger: 4ACharging time: appx. 4.9 hrs.Display: KioxFrame: aluminum 6061, internal cable routing
Fork: SR Suntour Lytro 34 Air Boost, 140 mmRearShock: SR Suntour UnaAir TR LO-R8-Z1, 140 mmDerailleur: Shimano Deore RD-M6000-GSGears: 10-speedCrankset: FSA 165 mmCassette: Shimano CS-M4100, 11-42T
Brakes: Shimano BR-MT410 hydraulic disc, 203/180 mm
Handlebar: BULLS MTB Alloy, Dia 31.8 mm, 760 mm, 25 mm raise, 9° back swept
Stem: MonkeyLink cable internal routing
Seatpost: Limotec A1-Z dropper post, 30.9 mm
Seat: BULLS Sportive
Hubs: Formula CL-811/ECT-148S
Rims: Ryde Disc 30
Tires: VeeTire Crown Gem, 66-584/27.5 x 2.60
Pedals: BULLS MTB
Weight: 56.2 lbs.
Geometry

Frame Size |
|
41CM |
44CM |
48CM |
54CM |
Seat Tube Length |
A |
410 |
440 |
480 |
540 |
Top Tube Length |
B |
588.5 |
608.5 |
634.3 |
660 |
Chain Stay Length |
C |
445 |
445 |
445 |
445 |
Bottom Bracket Offset |
D |
5mm |
5mm |
5mm |
5mm |
Head Tube Length |
E |
120 |
120 |
130 |
140 |
Head Tube Angle |
α |
66.5° |
66.5 |
66.5° |
66.5° |
Seat Tube Angle |
β |
74° |
74° |
74° |
74° |
Standover Height |
|
780 |
800 |
840 |
870 |
Wheelbase |
|
1238 |
1238 |
1244 |
1269 |
Reach |
|
612 |
612 |
621 |
630 |
Stack |
|
419 |
439 |
462 |
484 |
Measured in millimeters
Sizing

5-year Frame Warranty
How do you know what size of bike you should buy?
A good place to start is using the sizing charts included for each bike on the info page. If you're in the middle of the recommended height range for a specific size then usually that's the correct one to go with. If you find yourself overlapping sizes at either the top or bottom of the height recommendation than sizing up or down could be a consideration.
For more relaxed fitting "city-style" bikes sizing is less crucial because often they will have adjustable stems and offer more overlap in sizing. Smaller bikes will be slightly easier to manage when starting and stopping while larger bikes will feel more stable when riding. Most often we recommend sizing down in this category.
Bikes that have a more aggressive riding position i.e. road, gravel and mountain bikes sizing is more important. In these categories we usually look closely at 3 numbers, reach, stack, and top-tube length.