Kibblewhite 20-2133 Valve Guide Bronze Exhaust Oversize Harley-Davidson - C630 0.003

The Kibblewhite 20-2133 is a precision-engineered valve guide designed for Harley-Davidson applications. This exhaust valve guide features C630 bronze alloy construction with a +0.003" oversize dimension for worn guide bores requiring machining.

Key Features:

• C630 bronze alloy material for superior heat dissipation and wear resistance
• Exhaust position application engineered for high-temperature environments
• +0.003" oversize outer diameter for precision bore machining
• KPMI (Kibblewhite Precision Machining Inc.) quality standards
• Proprietary material specification with controlled carbon, silicon, manganese, nickel, chromium, copper and sulfur content
• Highly pearlitic structure with dense fine grain for extended service life

This valve guide is manufactured to exacting tolerances using Kibblewhite's proprietary bronze alloy formulation. The C630 material specification provides excellent wear resistance and thermal stability in demanding exhaust valve applications. The +0.003" oversize dimension allows machine shops to restore worn guide bores to proper specifications while maintaining precise valve stem clearances.