Sport Rider Photos
Because World Superbike regulations required the use of stock EFI throttle bodies, the SP2 version was fitted with these huge 62mm units as standard equipment. Together with different cylinder head porting and revised fuel/ignition mapping, the larger throttle bodies gained about five horsepower over the original RC51, while also smoothing out its throttle response.
Honda RC51 (RVT1000R) - Great Sportbikes of the Past