KPMI Racing Valve Spring Kit – Honda CRF450R (2002–2008)

Description

The KPMI Racing Valve Spring Kit is engineered for serious riders and engine builders who demand maximum durability and control at high RPM. Each spring is wound from Premium Kobe Super-Clean Chrome Silicon Wire, then heat-treated, stress-relieved, and shot-peened for the ultimate in reliability and strength.

KPMI’s proprietary design software ensures each spring delivers the perfect balance of seat pressure, lift capability, and harmonic control to handle modern performance cam profiles and boosted racing applications.

What’s Included

✅ Complete KPMI Racing Valve Spring Kit
✅ Beehive springs
✅ Lightweight heat-treated steel retainers
✅ Designed for use with OEM seal/base (OE# 3610212)

Fitment

📦 Honda CRF450R

• 2008 CRF450R

• 2007 CRF450R

• 2006 CRF450R

• 2005 CRF450R

• 2004 CRF450R

• 2003 CRF450R

• 2002 CRF450R

Warranty Info

🛡️ Covered by KPMI’s limited warranty against defects in materials and workmanship.

Key Features

• Premium Kobe Chrome Silicon wire construction

• Heat-treated, stress-relieved, and shot-peened for long life

• 80 lbs seat pressure / 205 lbs at 0.435" lift (max)

• Designed to work with OEM integrated seal/base (OE# 3610212)

• Lightweight steel retainers reduce reciprocating mass

• Beehive spring design provides superior control for high-RPM and boosted engines

• Optimized using advanced spring simulation and harmonic analysis software

Price & SKU

💲 Retail Price: $207.95
SKU: 191-21005
Brand Number: 30-30640
Estimated Shipping Weight: 0.49 lb