KPMI Intake Valve Spring Kit – CRF450R 2002-2008
KPMI Intake Valve Spring Kit – Honda CRF450R (2002–2008)
Description
Upgrade your CRF450R’s reliability with the KPMI Intake Valve Spring Kit, designed to replace factory titanium components with a stronger, longer-lasting stainless-steel conversion system. Each kit is precision-engineered using advanced simulation software to match spring force and frequency to the cam profile, ensuring perfect compatibility and consistent performance at high RPM.
Thousands of riders have converted to this setup to dramatically extend intake valve life under race or off-road use.
What’s Included
✅ Complete intake valve spring conversion kit
✅ Stainless steel valve springs and retainers
✅ Factory packaging
Fitment
📦 Honda CRF450R
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2008 CRF450R
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2007 CRF450R
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2006 CRF450R
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2005 CRF450R
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2004 CRF450R
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2003 CRF450R
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2002 CRF450R
Warranty Info
🛡️ Backed by KPMI’s limited warranty against defects in materials and workmanship.
Key Features
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Stainless steel conversion system replaces OEM titanium valves and springs
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Extends valve life and improves reliability for high-RPM engines
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Engineered for perfect compatibility with KPMI Black Diamond and White Diamond valves
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Optimized spring force and natural frequency using proprietary simulation software
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Proven on thousands of race and off-road builds worldwide
Price & SKU
💲 Retail Price: $184.95
SKU: 191-41003
Brand Number: 30-31210
Estimated Shipping Weight: 0.47 lb
📦 Shipping Information
In-Stock Items:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch
Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
- Sneakers: 1–2 weeks
Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.
Questions? Contact us—we respond within 24 hours.
