Engine

Powerful 449cc engine churns out 55 bhp at 9000rpm and 36 lb/ft of torque at 7000rpm. Compact, lightweight engine assembly weighs only 65.4 pounds. Vertically-split crankcases feature a built-in oil pump, reducing weight 5.1 ounces compared to a conventional design. Exhaust system uses a lightweight titanium exhaust header.

Unicam Valve Train

CRF450R_04.jpg (78794 bytes)

Compact Four-Valve Cylinder Head

CRF450R_05.jpg (62053 bytes)