Kibblewhite Racing Valve Spring Kit 0.445 Lift for Yamaha YXZ1000R

Description

The Kibblewhite® Racing Valve Spring Kit for Yamaha YXZ1000R is engineered for high-performance applications. Designed with increased spring rates and 0.445" lift compatibility, this kit provides superior valvetrain control at high RPMs and is suitable for boosted or turbocharged setups. Utilizing Finite Element Analysis (FEA) and cam profile simulation software, the H.T. tool steel retainers offer the strength and wear-resistance of traditionally heavier materials while reducing mass to within grams of titanium retainers. The kit includes 12 Cr-Si dual valve springs, 12 CNC-machined titanium retainers, and 12 H.T. steel basewashers, ensuring optimal performance and reliability under extreme conditions. Perfect for both intake and exhaust applications, this advanced kit delivers professional-grade racing performance.