Feuling Parts Camhaft - Reaper - 405 Series - Chain Drive - M8803901576 Product Description Produces a wide powerband that increases torque and horsepower throughout the entire rpm range Direct bolt in replacement for M8 engines; can be used with stock valve springs, pushrods, lifters and exhaust Will respond well when used with slip on mufflers or full exhaust system and a high flow air cleaner Notes Feuling recommends using mufflers with smaller cores for the best low rpm power and pull. 1700 5700 rpm range