With a revolutionary rearward slanted, liquid- cooled, DOHC 4-stroke powerplant with four titanium valves based on the YZ450F, a wide ratio five-speed transmission and WR- specific modifications—the WR450F is an "out-of-the-box" enduro machine. (California Green Sticker compliant with a forestry service-approved spark arrestor.)
Revolutionary rearward slanted, liquid-cooled, DOHC 4-stroke power plant with 4 titanium valves based on the YZ250F, with an added sixth gear and wide ratio transmission, among other modifications, make it perfect for Enduro competition.