You think you know the Yamaha WR line? Try again, this app will teach you things about your dirt bike that you never knew before!

This is a great app for any motorcycle and dirt bike enthusiast, especially for those who love Yamaha and the WR line of motorcycles.

Pictures, Specs, features, history of the WR line of Yamaha motorcycles.

Yamaha, WR, WR400, WR400F, WR426, WR450, WR450F, history, 1998, 2001, performance, changes, model, WR250, 250F, 2003, 2007, 2008, 2009, frame, suspension, YZ, YZ250F, YZ450F YZ250, YZ125, YZ450