This little guy can really go! No speedo on my racer, so can't give you a number. I've raced at NOLA, Barber, Willow Springs, Road America and Daytona, and kicked ass winning some regional titles in AHRMA, as well as almost winning Championship, and that was before the WiseCo race piston was installed. MegaCycle Race Cam only. Hawk front end, Hurricaine rear, Galfer lines, Ohlins rear shocks, Race Tech Gold Valve Emulators, Jemco Exhaust, Bridgestone Tires, race gas, and 121lb rider. 7lbs = 1HP. Will let you know if I can get a read on mph, going to take it out again soon.