20-60HSM KPMI, exhaust valve guide. Manganese. +.025"

When a Shovelhead cylinder head has seen significant wear or previous machining errors, this .025-inch oversize exhaust valve guide from Kibblewhite is often the last line of defense before needing major head surgery. Designed for 1979 to 1984 80-inch (1340cc) models, this manganese bronze guide provides a massive increase in outer diameter to fill heavily enlarged bores. It retains all the benefits of manganese bronze, including excellent lubricity and the ability to be easily reamed and finished with basic tools. This guide is a lifesaver for vintage heads, providing a high-performance material that handles the heat of the exhaust port while remaining easy for the mechanic to install and size.