CVT Sport Clutch Set For NMAX / AEROX / NVX Performance Parts/Kawasaki/KLX140 - KLX150/Valves and Clutch Springs 31/25 works best with 63mm

31/25 works best with 63mm piston (170cc kit) and the 34/29 works with piston 66mm size and up

Made from durable materials for dirt track riding

Keep all your original parts

We also selling ultimate bore up kits include cylinder head with big valve

CVT Sport Clutch Set For NMAX / AEROX / NVX Performance Parts/Kawasaki/KLX140 - KLX150/Valves and Clutch Springs 31/25 works best with 63mmHigh quality friction lining material producing maximum friction at Clutch Housing (Clutch Bell) that will increase acceleration. Clutch Housing design with hole to easy release heat and more durable. Suitable for daily use and modification.