After a three-race winning streak in the TT Zero Challenge electric bike race classification at the legendary Isle of Man TT (IoMTT), Mugen – racing partners to Honda – are back with the Mugen Shinden Roku e-racer for 2017. Racing as “Team Mugen”, the Shinden Roku will be piloted by multiple TT winners John McGuiness and Guy Martin.

The Mugen Shinden Roku – “roku” meaning six in Japanese – carries an oil-cooled, three-phase, brushless-motor that has a maximum equivalent output of 163.2 PS and a maximum torque of 210 Nm. Batteries are laminate lithium-ion with an output voltage of 370 volts.

Carrying its 248 kg weight – down from the Shinden Go’s 250 kg – in a carbon-fibre monocouque chassis, the Shinden Roku has evolved somewhat from the previous generation race machine, though details are scanty. Mugen’s corporate blog (in Japanese) made reference to a new inverter module and batteries, although battery capacity was not revealed.

It can be assumed there will be enough charge to propel the Shinden Roku around the 60 km IoMTT course, with the magic number for the TT Zero class being an average speed of 193 km/h, or 120 mp/h, in TT-speak. In 2016, McGuiness, riding the Shinden Go, managed an average lap speed of 192 km/h or 119 mp/h, reports New Atlas.

Team Mugen won the TT Zero races in 2014 and 2015 with McGuiness, while the 2016 race was taken by Bruce Antsey. The IoMTT kicks off on May 27.