(Spec R3)UMA Racing Camshaft - Yamaha R15//WR125/WR15/R125/MT15 UMA Racing Camshaft (Spec R3) UMA Racing camshafts are ideal for plug and play use on stock and modified motors, even better when used together with their big bore kits. More lift and duration to each rotation cycle allows for more combustion. Each camshaft is CNC hardened iron made with a focus on low noise and long usage life. This camshaft is made with a decompression pin lobe to allow for easy engine starting. Lift: In/8.64mm Ex/8.82mm Duration: In/266 Ex/264 Fitting: Yamaha Y15ZR/Jupiter MX King/Crypton X/Spark/Exciter/Sniper MXi/ T150 Yamaha Fz150i/Vixion Yamaha R15/R125/MT-125/MT-150/WR125.