20-21032 KPMI, exhaust valve guide. C630 bronze. +.002"

When you are rebuilding a 2017 to 2023 Milwaukee-Eight and find the exhaust guide bores are a bit loose, this .002 inch oversize Kibblewhite guide is exactly what you need. Made from C630 nickel-aluminum-bronze, it is built to handle the intense heat of the exhaust port in high-performance applications. This alloy is significantly tougher than standard bronze, offering superior wear resistance and thermal conductivity to keep your valves cool. The .002 inch oversize on the outside diameter ensures a proper interference fit in the cylinder head. It is a professional-grade component that provides the stability and longevity required for both aggressive street riding and track use, ensuring your valvetrain geometry remains perfect for the long haul.