KPMI Lightweight Racing Valve Spring Kit – Honda CRF450R (2009–2012)

Description

Engineered for serious off-road and racing performance, the KPMI Lightweight Racing Valve Spring Kit provides precision control at high RPM with reduced mass for improved throttle response. Each spring is wound from premium Chrome-Silicon wire, then heat-treated, stress-relieved, and shot-peened to deliver maximum durability and consistent performance.

The titanium retainers and beehive spring design significantly reduce reciprocating mass, improving valve control and extending spring life under demanding conditions.

What’s Included

✅ 2 × Intake CrSi Valve Springs
✅ 2 × Exhaust CrSi Valve Springs
✅ 2 × Intake Titanium Retainers
✅ 2 × Exhaust Titanium Retainers
✅ 2 × Intake H.T. Steel Basewashers
✅ 2 × Exhaust H.T. Steel Basewashers

Note:

• Exhaust springs include a progressively wound inner spring (install tightly wound end toward the steel basewasher).

• Keepers are not included.

Fitment

📦 Honda CRF450R

• 2012 CRF450R

• 2011 CRF450R

• 2010 CRF450R

• 2009 CRF450R

Warranty Info

🛡️ Covered by Kibblewhite’s limited warranty against defects in material or workmanship.

Key Features

• 0.440" lift rating for high-performance cam profiles

• Premium Chrome-Silicon wire for superior fatigue resistance

• Titanium upper retainers and steel basewashers for lightweight strength

• Engineered using proprietary spring analysis software

• 80 lbs seat pressure / 205 lbs at 0.435" lift

• Designed for OEM integrated seal/base (OE# 3610212)

• Complete kit for one motor (intake & exhaust)

• Made in the U.S.A.

Price & SKU

💲 Retail Price: $207.83
SKU: 0926-1640
Brand Number: 30-31250
Estimated Shipping Weight: 0.15 lb