
RACING VALVE SPRING KIT
In stock · stock as of Sep 16, 2026
Shipping calculated at checkout
30-day returns on unused parts
Details
KPMI® valve springs are wound from Premium Kobe Super-Clean Chrome Silicon Wire. KPMI® valve springs are heat-treated, stress relieved, and shot peened to insure maximum performance and life. Springs are engineered for each specific application using proprietary advanced spring design simulation, and analysis software. Engineers pay special attention to cam and spring harmonics, stress, mass, and operating rpm.
Specs
- Vehicle
- ATV
- Weight Lb
- 0.48
- Shipping Class
- standard
Vehicle Fitment
Supplier-confirmed applications for this exact part. Match the year, make, and model before ordering.
Honda TRX400EX Sportrax
1999–2009
Honda TRX400X
2012–2014
Parts for the Same Vehicles
These parts share at least one listed vehicle application. Check each part’s fitment for your model and year.


