The Honda Force V4 Story Site has been updated with “2nd Generation Force V4,” a historic recollection of the V4 maturing as a race engine. In 1985, the designation of Honda’s V4 powered race bikes changed from RS to RVF, a change indicative of significant technical advances. While the liquid-cooled V4 base engine (such as used in the VF750F) remained fundamentally unchanged, changes in firing order and new 4-into-2-into-1 exhaust systems were featured. For increased chassis rigidity, the aluminium box-section double-cradle frame was changed to a high-rigidity aluminium twin-tube diamond frame.These improvements helped the RVF750 win many important international races, including the Bol’Dor 24-Hour and the Suzuka 8-Hour endurance races.
In 1986 Honda released the now legendary VFR750F which was developed based on feedback from the RVF750. This newly designed V4 engine featured a 180°crankshaft, gear-driven cams and more compact engine design. Its impressive performance made it an instant favorite of sportbike riders around the world. The highly refined power unit was used to power many racing machines, including the RVF750. Development continues, and Honda’s V4 engines still power winning race bikes around the world.
