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 Cub C90 and Cub C100 non-dream 12v models, also Honda Biz 100. (49.5mm stroke, vertical cylinder cooling fins) underbones/scooter models.