Chain drive. .543" int. .553" exh. Replacement cams for use in combination with the stock mechanical chain tensioner system. Compatible with stock length pushrods. Bolt-in for 95/96/103/110" with stock pushrods and lifters etc. The Freeway Flyer smooth cam lobes. More power than stock with air cleaner and exhaust mods. Easy starting. 99-04 TC 88/95 require high lift valve springs. 1900-6000 RPM. 99-06 Twin Cam (excl. 2006 Dyna) (NU)