COPPERHEAD EVO HD 750 DIAMOND
Heavy duty and reliable. With a Shimano drivetrain and a load limit of 330 lbs., the Copperhead HD is a workhorse of a hardtail eMTB built to handle tough rides.
"THE GREAT EQUALIZER, THE COPPERHEAD EVO HD DIAMOND 750 IS THE MOST ACCESSIBLE EMTB AVAILABLE"
The BULLS Copperhead EVO HD 750 Diamond is a high-performance electric mountain bike designed for riders who want to conquer challenging trails with confidence and ease. This eBike is built to handle tough terrains, offering a robust and versatile platform for all riders. Here’s a detailed look at its features:
DriveUnit: Bosch Performance Line CX Smart System (85 Nm)
Battery: BOSCH PowerTube 750 Wh Smart System
Charger: 4A Charging time appx. 6.0 hrs.
Charging time:
Display: LED Remote
Frame: aluminum 6061
Fork: BULLS Lytro 35 Supreme SL Air Boost, 29, 120 mm
RearShock:
Derailleur: Shimano Deore RD-M5120-SGS
Gears: 10-speed
Crankset: FSA 165 mm
Cassette: Shimano CS-M4100-10, 11-46TBrakes: Tektro HD-M530/530 hydraulic disc, 203/180 mmHandlebar: ZECURE MTB Alloy, Dia 31.8 mm, 740 mm, 25 mm raise, 9° back sweptStem: BULLS MTB internal cableSeatpost: ZECURE AlloySeat: ZECURE MTBHubs: Formula CL-811/CL2241Rims: Ryde Disc 30Tires: Schwalbe Smart Sam K-Guard 65-584, 27.5 x 2.60Pedals: ZECURE MTBWeight: 55.8 lbs.
Geometry

Frame Size |
|
41CM |
44CM |
48CM |
54CM |
Seat Tube Length |
A |
410 |
440 |
480 |
540 |
Top Tube Length |
B |
615 |
620 |
635 |
660 |
Chain Stay Length |
C |
440 |
440 |
440 |
440 |
Bottom Bracket Offset |
D |
60 |
60 |
60 |
60 |
Head Tube Length |
E |
125 |
125 |
130 |
130 |
Head Tube Angle |
α |
66° |
66° |
66° |
66° |
Seat Tube Angle |
β |
74.5° |
74.5° |
74° |
74° |
Standover Height |
|
490 |
490 |
490 |
490 |
Wheelbase |
|
780 |
795 |
820 |
860 |
Reach |
|
438 |
443 |
451 |
473 |
Stack |
|
638 |
638 |
642 |
652 |
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.