ROCK MACHINE Catherine e90 Touring

An eMTB with Dapu central motor and maximum torque up to 90 Nm.

Discount for purchasing 2 or more e-bikes: 5%

Choose from the variants: info

  • Equipped with a 500Wh battery integrated into the frame.

  • The high performance Dapu MD250S central motor.

  • Shimano BL-MT200/BR-MT200 hydraulic disc brakes with 160 mm discs.

  • SR Suntour Mobie25 RLR suspension fork with 75front suspension travel


E-bike range calculator

Total weight of rider (incl. equipment)
Predominant route profile
Battery capacity
For 80 kg riders, with a battery capacity of Wh when driving with maximum assistance after a predominantly , the range on this e-bike will be approximately
(Setting specific assistant mode, electro-technical state, battery age, ambient temperature, aerodynamics and driving technique could affect the overall range)

Dapu M250S CETNRAL DRIVE UNIT. Second generation: Advanced Japan technology + Great performance up to 100 Nm + Silent operations.

From the humble garage-days back in 1994 to the present fast changing times, Rock Machine has always followed one basic principle: Having fun behind the bars. Sure there are months in front of the computer, sure there are miles & miles on the jetplanes, sure they spent countless of hours by refining even the smallest frame details.



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                      E-Bike Buyer's Guide    Everything about batteries 

                      Delivery of your e-bike    Everything about e-bike motors 





Drive type SPORT DRIVE middle motor MD250S
Capacity and battery type 500Wh (36V/13.8Ah) Li-Ion, frame
Control SPORT DRIVE compact display and control ring
Frame sizes 15.0"(S), 17.0"(M), 19.0"(L)
Frame type and material Alloy Al-6061 T6 Custom tubing, Inner Cable Routing
Front fork SR Suntour Mobie25 RLR, 100mm travel
Number of gears 1x9
Shifters and derailleur SHIMANO ALTUS SL-M2010-9R RapidFire Plus, 9-speed
Type and brand of brakes SHIMANO BL-MT200/BR-MT200, hydraulic disc brake
Cassette SHIMANO CS-HG200-9, 11-36T
Chain KMC e9S
The stem ONE1 TDS-C301 Alloy, 31.8mm, +6°
Saddle and seat post WTB Koda Sport; ONE1 Alloy, SPS 405, 27.2x350mm
Tires WTB Nineline Comp, 29x2.25", Reflective Stripe
Load capacity 120 kg