CNC BIG VALVE CYLINDER HEAD

The Revelry Racing CNC Ported “Big Valve” cylinder head increases intake flow 37.9% and exhaust flow 36.9% over stock cylinder head.

This is a genuine Royal Enfield cylinder head sub assembly & throttle body adapter set fully CNC ported with bigger valves.

Includes 8 new valves and 8 new seats all fitted and seats cut. (no seals or springs)

Requires a new head gasket (included with S&S big bore kit) and new cylinder head bolts (not included). 

NOTE: To have a your existing cylinder head and throttle body adapters processd order RR-CNC-650-TWIN-BV-CONV.