Six50 EVO AM 4



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Equipped with 150mm FOX Factory Kashima Coat full suspension chassis and the most powerful Bosch Performance Line CX drive unit, riders can experience peak e-MTB performance in the saddle of the Bulls Six50 EVO AM 4. With 150mm travel front and rear, and robust Schwalbe Nobby Nic 27.5+ tyres, the bike grips and rides with precision on any downhill. The Bosch Powertube 500Wh battery integrates seamlessly into the frame, allowing for optimum balance and low centre of gravity.

State-of-the-art Shimano XTR 11-Speed gears provide precise gear shifting, and high performance Magura MT-Trail hydraulic disc brakes are tuned for reliable stopping power and excellent modulation. With the Bulls Six50 EVO AM 4, nothing stands in the way of maximum trail action.

If you’d like a test-ride please call in at our London, Leicester or Suffolk branches, or email us to arrange a date.

Bosch Performance Line CX

Bosch Performance Line CX

The Performance Line CX is the most powerful motor from Bosch. With a maximum torque of 75 Nm, the Performance Line CX is the ideal drive for ambitious and demanding eBikers. In eMTB mode, you always receive the required power – from Tour to Turbo. Up to 300% of perfectly delivered support, incredible dynamism and unique grip provide the best possible support on all terrains, as well as improved start-up behaviour. The progressive motor support automatically adapts to the individual’s riding style, so there is no need to change support modes in eMTB mode.

  • Direct flow. Perfect support as soon as you step onto the pedals means that starting on steep slopes is significantly easier.
  • No trigger. Thanks to the new eMTB mode, there is no need to change support modes, so the rider can concentrate fully on the trail
  • Trail Control. Enables effortless riding and optimal traction thanks to improved control, even on challenging uphill sections or when encountering difficult obstacles.
  • Maximum momentum. A torque of up to 75 Nm ensures sporty acceleration even in alpine terrain, without changing gear.
  • More walk-assistance power. Stronger support up to speeds of 6 km/h makes pushing your bike much easier. Available from autumn 2018 and backwards compatible for all Performance Line CX systems.
  • eMTB mode. For a powerful start uphill and in rough terrain. Improved moving-off behaviour guarantees optimal support in all terrains and on any trail. Noticeably easier, sporty starting as soon as you step onto the pedals.

▶ Peak power: 500W (250 max continuous)

▶ Peak torque: 75 Nm

eMTB Mode

The eMTB mode replaces the former sport mode with the Performance Line CX and varies between ‘Tour’ mode and ‘Turbo’. A maximum torque of up to 75 Nm strenghtens the motor and the rider’s personal contribution between 120% and 300%.

Depending on the pedal pressure the progressive motor support adjusts automatically to the individual’s riding characteristics. Without shifting gears the engine supports even slight pedal revolutions constantly with ideal performance. The ride on steep slopes is almost effortless. This ensures a natural riding sensation and maximum performance on the trail.


Motor manufacturerBosch
Drive unitBosch Performance Line CX
Motor typeMiddle motor
Torque250 Watt
Assistance speedup to 25 km/h
Power packBosch
Power typeLithium Ionen
Battery voltage36 V
Battery capacity (Ah)13,4 Ah
Battery capacity (Wh)500 Wh
Charging time 100%ca. 4,5 hrs
Charging time 50%ca. 2,2 hrs
DisplayBosch Intuvia
FrameAluminium Hydroforming,Tapered Steerer, internal cable routing
Frame size41 cm, 44 cm, 49 cm, 54 cm
Wheel size27,5+ inch
ForkFox Factory 36 Float
Travel150 mm
Rear ShockFOX Float 3-Pos DPS LSC Factory Kashima
Rear travel150 mm
Rear derailleurShimano XTR RD-M9000-GS Shadow Plus
ShifterShimano Deore XT SL-M8000
Gears11 derailleur gears
Crank setMiranda
CassetteShimano Deore XT CS-M8000 11-46T
Front brakesMagura MT-Trail
Rear brakesMagura MT-Trail
SaddleFizik Gobi
SeatpostKind Shock LEV Integra
Wheels setDT Swiss H 1700 Spline
TiresSchwalbe Magic Mary
Tyre size65-584 (27,5 x 2.60)
StemMonkey Link 1
Weightca. 23,9 kg
Maximum rider weight115 kg


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