Not a bike you can buy, or even go see on a random show room floor. The KR V5.
Powered by Honda's mighty V5 engine, Kenny Roberts fielded this bike for his MotoGP team. Ridden by Kenny Roberts Jr, it was competitive almost from the first race.
The engine and engine management system was Honda, but the chassis was designed and built at Kenny's MotoGP team headquarters in Banbury, Oxfordshire in the UK.
This was taken at Laguna Seca, during the US GP in 2006.
HP? Over 250. Top speed? 210 ish. Weight? Couldn't say. It isn't like there were a great many details about this bike ever released.