SKU:11-1139
The Kibblewhite.004 oversize cast-iron intake and exhaust valve for Knucklehead engines delivers a precise, original-style fit with a.004 inch oversize to improve airflow while preserving classic durability.
The package includes accessory items to support a comprehensive restoration: 15-0297 Overhead Valve Guide Gasket, 13-0792 Replica Valve Spring Set, 11-9641 Nitrate Intake Valve, and 11-9643 Nitrate Exhaust Valve (nitrate-coated for added longevity). The design accepts the same component for both intake and exhaust, simplifying installation and reducing the need for multiple parts during rebuilds. This valve is well suited for restoration projects or performance upgrades on vintage Knucklehead motorcycles from the late 1930s to mid-1940s.
Knucklehead.004 oversize valve guide features a cast iron construction as original with a ground outer diameter.The Kibblewhite Cast Iron.004 Oversize Intake and Exhaust Valve (Part #20-4097C) is designed specifically for vintage Harley Davidson Knucklehead engines from 1936 to 1945. Crafted in the USA, this valve offers precise fitment and reliable performance for restorations and rebuilds. Its high-quality cast iron construction ensures durability and longevity under demanding engine conditions. The valve is suitable for both intake and exhaust applications, simplifying installation and maintenance by using the same component for both functions. This design streamlines assembly and reduces the need for multiple parts, making it a practical choice for classic Harley Davidson enthusiasts. The valve's oversize dimension provides a slight increase in airflow capacity, which can enhance engine performance and efficiency when paired with proper valve guide seals and associated components. The product is recommended for use with #14-0452 Valve Guide Seals to ensure optimal sealing and longevity. The package includes accessory items such as an overhead valve guide gasket, replica valve spring set, and nitrate-coated intake and exhaust valves, which support comprehensive engine restoration projects. Whether rebuilding for restoration or performance upgrades, this valve guarantees a precise fit, durability, and compatibility with vintage Harley Davidson models from the late 1930s to mid-1940s. Trust Kibblewhite's reputation for quality and craftsmanship to deliver reliable engine components for your classic motorcycle rebuild.
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