Big Valve Heads - Standard Bore 40mm x 35.5mm (S/S Valves-85.5mm bore)

Big Valve Heads - Standard Bore 40mm x 35.5mm (S/S Valves-85.5mm bore)

These new heads are manufactured identically to the original 040 castings from years ago.

These are complete with 40mm stainless intake and 35.5mm stainless exhaust valves, heavy duty single springs, Cro-moly retainers and hardened valve locks.

These new heads use the 12mm x 3/4" reach spark plugs, have stock intake and exhaust ports and have a 53cc chamber size.

Lash Caps are required in all cylinder head applications that have Stainless Steel Valves.

Sold as a pair