This cam is to be used with modified piston and springs. It is mainly meant to be used in Ice Racing and Road Racing bikes, basically where-ever mid-range and FULL top-end power is needed. This cam will provide a smooth power band. TDC Lift in=.223"/ex= .225". The valve lift is .495/.465; the duration is 300/296; and the lobe center is 102/102. Intake open/close is 48btc/72abc. Valve Lash is .005. Exhaust open/close is 70bbc/46atc. Valve Lash is .005. "Please allow 10-14 days for delivery"