20-50HSM KPMI, intake valve guide. Manganese. +.025"

When you're refreshing the top end on a 1979 to 1984 80-cubic inch Shovelhead, these Kibblewhite manganese bronze intake valve guides are a practical and cost-effective solution. This specific guide is a +.025-inch oversize version, perfect for heads that need a bit of extra material to get the fitment just right. Manganese bronze offers excellent heat transfer and natural lubricity, and while it is slightly softer than C630 bearing bronze, it is much easier to ream to size using standard shop tools like a ball hone and electric drill. It is a great choice for mechanics looking for a quick, precise finish without sacrificing performance.