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Bulls E-Core EVO AM Di2 27.5+

Bulls E-Core EVO AM Di2 27.5+
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This plush all-mountain offering powered by Shimano's small but powerful E8000 motor is ready to dive into the trails and swoop through the lines.

Giving your ride the juice is BULLS' own Twin Core technology, 2 x 375Wh batteries run side by side with option of leaving one at home for the shorter ride or when you need to cut weight like an off-season wrestler. You can even stash a snack or an extra tube if you ride with a single battery. But, if you want a long, epic ride, take both batteries. By their powers combined, you have a whopping, industry-leading 750Wh of integrated, stealth adventure.

Electronic drivetrain systems deliver excellent shifting, easy set up, and solid battery life. Here are the highlights of today’s electronic shifting systems:

Shifting Performance
Electronic shifting systems use powerful servomotors to rapidly shift the chain. Because microprocessors and sensors constantly monitor every aspect of the system, they shift with precisely and without chain rub.

Many major systems have customizable shifting. Some have the ability to add remote shifters for common riding positions, and some even allow you to change the functions of the shifting buttons.

Electronic groupsets are responsive and consistent. There are no cables to stretch and wear out, so you get a flawless shift every time. The added bonus is you’ll never have to replace a derailleur cable ever again.

Dropper posts

A dropper seatpost allows you to quickly lower and raise your seat to give you an ideal riding position. Dropping your seat creates a lower center of gravity for better control and maneuverability on steep descents, while raising it puts you at normal riding height for efficient pedaling.

Construction can include either hydraulic- or cable-actuated systems and the post’s travel can either be infinitely adjustable or stopped at set intervals, depending on the model.

Dropper seatposts come in standard lengths and diameters and vary by the amount of travel.

Plus-size rims and tires

Wider than standard yet narrower than fat, plus-size rims and tires hit the sweet spot in grip, stability, and speed, giving you more confidence on technical terrain. Compared to a standard tire you’ll feel grip in places you wouldn’t expect thanks to a bigger contact patch and greater rollover clearance. More air volume allows lower tire pressures which softens bumps and increases float on sand or snow. Whether you’re a novice or an expert, the benefits of plus-size tires and rims will amplify your mountain biking fun.


Motor Shimano STePS E8000
Battery TwinCore (2x 375Wh batteries; total 750Wh)
Frame 7005 Aluminum
Fork Fox 36 Float Rhythm Air Boost, 150mm
Rear Shock Fox Float DPS Performance, 150mm
Tires Schwalbe NobbyNic, SnakeSkin, TL-Easy, Folding, 70-584, 27,5 x 2.80
Crankset Shimano FC-E8050
Rear Derailleur Shimano Deore XT Di2 RD-M8050-GS Shadow Plus
Cassette/Rear Cogs Shimano Deore XT CS-M8000 11-46T
Shifters Shimano Deore XT Di2 SW-M8050
Handlebars BULLS
Stem MonkeyLink
Brakes Magura MT5 hydraulic disc, 180/180 mm
Pedals Wellgo
Saddle BULLS
Seat Post Kind Shock LEV SI dropper seatpost

* Subject to change without notice.

Part Numbers

Option MPN
Grey/Black/Blue / 44cm 791-73844
Grey/Black/Blue / 49cm 791-73849
Grey/Black/Blue / 54cm 791-73854