Steel Big Twin Tappet Block Set - V-Twin 10-0923

Big Twin tappet block set with steel finish features countersunk screw holes to accept tapered screws for mounting.

Inner diameter for standard lifters must be honed to.731 +/-.0005. Constructed of cast iron with steel plating. *NOTE: Order tappet screws separately in either 1/4 x 20 inch or 1/4 x 24 inch thread. *NOTE: Tappet bores are undersized and must be sized by installer to proper diameter.

Fitment: