In stock form this bike can hit speeds of 90 mph. With stock gearing and mods 95 mph. However gear it up and hold on my CR 500 can hit speeds of 112 on gps with a long enough area to reach this speed. This is on a smooth level and firm surface. In desert riding with proper gearing I normally reach 100 mph as top gearing is too tall for sand conditions. My bike is ported and piped horsepower is at 65 hp and bored to 512 cc. 100 mph at 4000 ft and properly jetted. Hope this helps.