Kibblewhite 20-50HSC Valve Guide Cast Iron Oversize Harley Shovelhead - 0.025

Kibblewhite Precision Machining valve guides are engineered specifically for Harley-Davidson Shovelhead 80" engines from 1978-1983. These oversize valve guides feature a +0.025" larger outside diameter for installation in worn or bored-out guide bores.

Key Features:

• Premium cast iron construction with custom-formulated alloy specification
• Highly pearlitic structure with dense fine grain for superior durability
• Precisely balanced carbon, silicon, manganese, nickel, chromium, copper and sulfur content
• Excellent wear resistance for extended valve train life
• +0.025" oversize outside diameter for repair applications
• Fits both intake and exhaust positions

Kibblewhite develops their cast iron valve guides using proprietary material specifications developed through extensive chemical analysis and testing. The result is a guide material that delivers exceptional wear characteristics and thermal stability in demanding air-cooled engine applications.