Arbres à cames Flathead Power S&S pour Knucklehead OHV de 1936 à 1947. La Pièce
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S&S, KN420 CAMSHAFT. .420" LIFT
High lift cam for modified Knuckleheads. .420" lift and longer duration for engines with up to 93" and up to 8.5:1 Compression ratio. High lift valve springs are required.