Big Bore Performance Cylinder Heads

Fly-cut and precision machined for 90.5 mm, 92.0 mm and 94.0 mm big bore cylinders.

Featuring stainless steel 40.0 mm intake and 35.5 mm exhaust valves.

Available with single or dual hi-rev valve springs.

All seats cut to proper angle.

Chromoly retainers.

3/4″ reach, 12.0 mm spark plugs bosses.

Price/head. 2 required.