the 450 did not really impress me. i saw one with a pipe and still the power was lacking something. i know that the mods are not out there yet but most stock 450r's up against the stock yfz's lost buy a bike lenght or two. i then had to kick the yfz's *** with my trike but still i thought it might have been the rider because they were both the same speed at top gear, just the yfz was ahead