Kibblewhite 40-40420 Valve Kit - Bronze Guides, Seals & Tappets

The Kibblewhite 40-40420 Engine Valve Kit provides precision-engineered valvetrain components designed for high-performance and racing applications. This comprehensive kit includes bronze valve guides, valve seals, and tappets manufactured to exacting standards for maximum durability and performance.

Bronze Valve Guides:

• Constructed from C630 nickel bronze alloy with 4-5% nickel content for superior wear resistance
• Approximately 80% copper content delivers outstanding heat conductivity for consistent performance
• Precision-profiled design minimizes airflow restriction while maintaining critical wall thickness in high-temperature zones
• Shortened top portions provide additional retainer-to-seal clearance for high-lift camshaft applications

Heavy-Duty Tappets:

• Engineered using advanced finite element stress analysis for optimal strength-to-weight ratio
• Machined from aircraft-quality solid steel bar stock for maximum reliability
• Proprietary heat treatment creates hardened surface with tough, non-brittle core
• Proven in demanding racing applications including motocross, flat track, road racing, drag racing, and land speed record attempts

Note: This kit requires OEM valve stem seals (not included). Ideal for engine rebuilds, performance upgrades, and racing applications where precision valvetrain components are critical for reliability and power output.