580 REAPER high lift cams are designed for the rider who is looking for more horsepower with a higher RPM power band. Camshafts have .580 lift on both intake and exhaust, require high lift valve springs see Feuling BEEHIVE ENDURANCE or HIGH LOAD valve springs, higher compression recommended with performance pushrods and lifters. High flow intake and performance exhaust required. 2000-16 XL and 2000-02 Buell are a direct bolt-in replacement for fine pitch pinion gear Cam set also fits 1991-99 but requires pinion gear swap using HD 24047-00 to convert the 1991-99 wide pitch pinion gear to a fine pitch setup.