Roads: Mugen Shinden Roku unveiled in Tokyo

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Mugen have lifted the covers off the electric challenger John McGuinness and Guy Martin will ride in the TT Zero race at this year’s Isle of Man TT.   

Dubbed the Shinden Roku (six), the bike is said to have been ‘extensively developed’ from the 2015 Shinden GO machine Bruce Anstey took to victory in the one-lap electric race after McGuinness retired with technical difficulties.

Mugen have won the electric battle every year since the withdrawal of the late Michael Cyzsz’s MotoCzysz squad in 2014. 

The latest evolution of the Shinden machine again features a carbon fibre monocoque frame, housing the oil-cooled, three-phase brushless motor with maximum power output of 120kW (around 160bhp). Powering that motor is a 370+ volt laminate-type lithium-ion battery.


As well as subtle design changes for 2017, the ‘emergency stop button’ for use by marshals or the rider should the bike crash or need to retire has been angled towards the rear of the bike after it was said McGuinness landed on it after a jump last year. While McGuinness isn’t convinced this is what happened, it’s better to be safe than sorry!

2017 Machine Spec

  • Machine Name: SHINDEN ROKU
  • Overall length/width/height (mm): 2,125 / 680 / 1,130
  • Ground Clearance (mm): 130
  • Seat Height (mm): 80
  • Total Weight(kg): 248
  • Tyre •Front : 120/70ZR17M/C (58W)
  • Tyre •Rear : 200/55ZR17M/C (78W)
  • Frame: CFRP Monocoque frame
  • Motor Type: Oil-cooled, 3-phase, brushless motor
  • Maximum Output (KW[PS]) : 120[163.2]
  • Maximum Torque (N-M (kgf-M]) : 210[21.4]
  • Battery Specification: Laminate-type Lithium-ion
  • Battery Output Voltage (V): 370 or more

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Oli Rushby

By Oli Rushby

Former sports reporter covering British Superbikes, World Superbikes and road racing