So what is powering this lightweight beast, you ask? The heart of the HP4 RACE is the purebred racing engine designed with specifications 6.2 and 7.2 as in the Endurance and Superbike World Championships. Peak output is at a claimed 215 hp at 13,900 rpm and the maximum torque of 120 Nm is reached at 10,000 pm. Compared to the engine of the S1000RR, the max engine speed has gone from 14,200 rpm to 14,500. The 6-speed close-ratio racing gearbox is used to achieve the best performance with its optimized transmission ratios and various secondary ratios (diverse pinions and chain sprockets included).