S&S Cycle SS330-0647 550G Gear Drive Camshaft Kit for Milwaukee-Eight Touring 17-Up/Softail 18-UpFEATURES & BENEFITS 550G is an ideal Horsepower Cam for 114 and larger engines Eliminates cam drive chain and tensioner Kits include all required bearings, o rings, and hardware Gear drive cams provide improved valve timing accuracy Made in the USA Required for installation: This cam requires Adjustable Pushrods and Heavy Duty Valve Springs. We recommend: 930 0123 Quickee Adjustable Pushrods with Cover Keepers for 2017 up M8 Models 900 0958 Heavy Duty