ESR Racing Valve Springs - Yamaha T135/R15/FZ150i

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.

Details:

• 2.8mm Spec 57mm - 62mm
• 2.9mm Spec 63mm - 65mm
• 3.0mm Spec 65mm - 70mm (JET 4 - JET 6)

Fitting:

Yamaha YZF-R15 V1 V2/MT-15/Xabre/M-SLAZ

Yamaha Fz150i Vixion

Yamaha T135 Jupiter MX/Crypton X/Spark/Exciter/Sniper/LC135