IVE HAD THIS BIKE FOR 4 MONTHS AND RACED EVERY WEEKEND. IVE HAD MANY 2 STROKES AND ALL MODELS, I HAVE ALSO RODE KTM 450SX CR450F AND THIS BIKE OUT HANDLES AND OUT PERFORMES THEM ALL. I AM A BEGINNER RACER {1 1/2 YR} AT 33. THE ONLY ADJUSTMENTS IVE MADE IS I LOWERED THE FRONT FORKS ABOUT 1/2 IN ABOVE TOP CLAMP TO HELP CORNERING.