Developed for tough enduro racing, the SOHC engine with 510.4cc is distinguished by an extremely compact design, easy maintenance and an excellent durability at a minimal weight. Together with the Keihin EFI system, they provide unrivaled enduro specific performance and rideability.
The engine features two oil pumps and a common oil circuit. A pressure pump provides reliable lubrication to the crankshaft, piston, counter balance shaft and valve train. In addition, it ensures the cooling of the ignition and lubrication of the clutch. A scavenger pump draws oil from the crankcase and uses it to lubricate the transmission.