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 R1/R3 Spec performance camshafts or those with similar lift.
- Spring ø: 3.2mm
- Free Length: 38.3mm
- Set Length: 32.3mm
- Stroke: 8.8mm
Yamaha Y15ZR/Jupiter MX King/Spark/Exciter/Sniper/T150
Yamaha FZ150i Vixion (2014-)
Yamaha YZF-R15 V2/ R125/MT-15/MT-125/WR125 (Non-VVA)(2014-18)