Racing GNCC with Am-Pro Yamaha
…, WR450F and WR250F, and I even have experience with the Am-Pro Yamaha crew after a quick ride on?Thad DuVall's championship-winning WR250F last year. But, Yamaha remains the sole Japanese provider of 2-strokes in America as well. I spent a little time aboard the?YZ250 during our 2009 250F Motocross…