S&amp,S Cycle 551 Gear Drive Easy Start Cams Complete Kit 106-5442 Manufacturer Part No. 106-5442 Convert your Twin Cam to a gear drive Kit includes cams, all gears, gaskets, bearings, bolts and bearing plate Optimized for 2007-up 1996 to 106 CID touring bike with slip-on mufflers and 9.0 to 10:1 compression Best bolt-in cam available for dressers