UMA Racing aftermarket valve springs ensure linear tension under fast compression when using high lift camshafts, and are stiffer to prevent valve float at high engine RPM. This set of valve springs are recommended for use with the UMA R and S Spec performance camshafts or those with similar lift.
- Spring ø: 3.0mm
- Free Length: 47.5mm
- Set Length: 36mm
- Stroke: 11mm
Yamaha YZF-R15 V1/R125/MT-15/MT-125/WR125/Fz150i Vixion (2008-14)
Yamaha T135 Jupiter MX/Crypton X/Spark/Exciter/Sniper/LC135