YFZ450 YFZ Valves Kibblewhite Valve Springs KPMI Complete Head Rebuild Parts Kit
Upgrade your Yamaha YFZ450 or YFZ450R with a Kibblewhite complete head rebuild kit featuring valves, springs, retainers, and guides. Made in the USA.
Yamaha YFZ450 Kibblewhite Complete Cylinder Head Rebuild Kit
Only Kit Including Genuine Kibblewhite Valve Keepers
Premium Valves, Springs & Hardware – Made in the USA
Restore factory performance or build a stronger, longer-lasting top end with the Kibblewhite Precision Machining (KPMI) Complete Head Rebuild Kit for the Yamaha YFZ450 and YFZ450R. This kit includes every critical valvetrain component needed for a professional-grade cylinder head rebuild.
🔥 Key Features & Benefits
Designed for aggressive riding, racing, and long service life, these Kibblewhite components deliver superior durability, valve control, and reliability under high RPM conditions.
- Kibblewhite White Diamond stainless steel valves for maximum strength and wear resistance
- Chrome silicone valve springs engineered for high-RPM stability
- Lightweight titanium retainers reduce valvetrain mass
- Bronze valve guides for improved heat transfer and longevity
- Genuine Kibblewhite valve keepers – precision heat-treated for secure valve retention
- RED Viton valve stem seals for superior oil control
- Includes Genuine KPMI RED Viton Stem Seals (no bait-and-switch blues!).
✅ Compatibility
This complete head rebuild kit is precision-engineered to fit the following Yamaha sport ATV models:
- Yamaha YFZ450 – All years
- Yamaha YFZ450R – All years
- Carbureted models
- Fuel-injected (FI) models
- Direct replacement – professional installation recommended
❓ Frequently Asked Questions (FAQ)
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Q: Does this kit include everything needed for a full valve job?
A: Yes. The kit includes valves, springs, retainers, keepers, guides, collars, and valve stem seals.
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Q: Are these OEM replacement parts?
A: These are premium aftermarket performance components designed to exceed OEM specifications.
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Q: Are these parts made in the USA?
A: Yes. All Kibblewhite components in this kit are proudly made in the USA.
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Q: Is this kit suitable for racing applications?
A: Absolutely. This kit is built for high-performance and closed-course racing use.
🌟 Why Buy from BPRATV? Trusted Performance Experts 🌟
At BPRATV, our promise is unwavering: The Best Parts. The Best Performance. The Best Price. Every component we sell is carefully selected to meet the demands of serious riders and racers. Trust BPRATV to keep your Yamaha YFZ450 running at its best, every single time.
Upgrade your YFZ450 top end with confidence — order today!
BPRATV - The Best Parts. The Best Performance. The Best Price.
BRAPPPPPPPPPP!
© BPRATV LLC 1-year limited warranty from the manufacturer for material or workmanship defects.*
Due to the nature of high performance and racing applications, BPRATV LLC components are sold without express warranty or any implied warranty of merchantability or fitness for a specific purpose. BPRATV LLC shall not, under any circumstances, be liable for any specific, incidental or consequential damages. Installation of these parts may void vehicle manufacturers warranty coverage and/or may cause the vehicle to be illegal in some locations.
This product is exempt from the emission standards and related requirements of 40 C.F.R. § 1051 as provided by 40 C.F.R. § 1051.620 and California law. Sold for closed-course competition use only.
