2014 YAMAHA WR450F, YZ250F style chassis plus 450 FI engine equals perfection. The WR450F features a powerful and reliable, high-revving, five-titanium-valve engine with fuel injection, YZ250F-bred advanced aluminum frame, latest generation YZ forks and shock, and slim bodywork provides awesome lightweight handling and open-class power. Plus it's green sticker approved for California.
2014 YAMAHA YZ450F, Featuring a new EFI engine, an entirely new frame, minimized body work and new suspension components providing for excellent mass centralization and class leading 450 power with 250-style handling.
2015 Yamaha YZ450F, Completely re-engineered just last year with new EFI engine, an entirely new frame, minimized body work and new suspension components providing for excellent mass centralization and class leading 450 power with 250-style handling. The critics agree: the YZ450F is the one to beat.