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.
Developed for tough enduro racing, the SOHC engine with 449.3cc 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.