The Race proven Faito Racing Stage 2 "S4 Evo" Camshaft is made from quality material for longer durability. Version 2 introduces better bearings over stock and a retuned profile. This cam has an aggressive duration of 240 degrees, will provide the best results for a mid to high RPMs for the your ride. Fits on Honda C100EX Cub Dream and Honda Wave100/Dream/Astrea/Citi/Supra/Biz 100 underbones. (49.5mm stroke, horizontal cylinder cooling fins) underbones/scooter models.