The Mod Shop 1000cc stage 2 cam is designed for the 1000cc engine with aftermarket pistons. Our 1000cc stage 2 cam has bottom end to top end power. We made sure the bottom end power was not sacrificed. Stage 2 cam has smooth power curve while still giving a 12hp gain. Peak power is at 8400-8700rpm. Made to work with stock valve springs on mav head motors. Requires head modification for clearancing and aftermarket pistons. Fuel tuning required.