For models with OEM style hydraulic units only for use with stock hydraulic or equivalent tappet assemblies. Manufactured from aerospace heat treated quality blue anodized aluminum tubing. Extra thin to prevent rubbing against the pushrod covers. Replacement for the OEM steel 17904-66 pushrods to help reduce reciprocating mass.
Fits: > 66-84 Shovelhead with OEM style hydraulic units (NU)
