Kibblewhite 30-30620 Engine Valve Kit with Bronze Guides, Seals & Tappets

The Kibblewhite 30-30620 Engine Valve Kit is a comprehensive valve train solution designed for high-performance automotive and motorcycle applications. This complete kit includes precision-engineered bronze valve guides, valve stem seals, and tappets manufactured to exacting specifications for demanding racing and performance environments.

KPMI Bronze Valve Guides:

Constructed from C630 nickel bronze alloy, these valve guides offer exceptional wear resistance and thermal management. The 4-5% nickel content provides superior durability under high-stress conditions, while the approximately 80% copper composition delivers outstanding heat conductivity to protect valves and seats from thermal damage. Guide profiles are aerodynamically optimized to minimize airflow disruption while maintaining critical wall thickness in high-temperature zones. The top portion is strategically shortened on applications where cam lift requirements necessitate additional valve retainer-to-seal clearance.

KPMI Tappets:

These tappets are engineered using advanced finite element analysis (FEA) software to achieve the optimal balance of strength and weight reduction. Machined from aircraft-grade solid steel bar stock, each tappet undergoes a proprietary heat treatment process that creates a hardened surface layer over a tough, non-brittle core for maximum wear resistance and impact durability. KPMI tappets are proven in the most demanding racing applications including Motocross, Flat Track Racing, Road Racing, Drag Racing, and Land Speed Racing at the Bonneville Salt Flats.

Kit Contents:

• Bronze valve guides (intake and exhaust)
• Valve stem seals
• Precision-machined tappets

Note: This kit uses OEM valve stem seals for specific applications. Verify compatibility with your engine before installation.