The Revelry Racing CNC Porting and “Big Valve”cylinder head conversion includes 8 new valves and 4 new intake seats all fitted and seats cut. (no seals or springs)
Increases intake flow 37.9% and exhaust flow 36.9% over stock cylinder head.
Requires a new head gasket (included with S&S big bore kit) and new cylinder head bolts (not included).
This is CNC porting and big valve conversion of your existing cylinder head & throttle body adapters.
NOTE: To have a genuine Royal Enfield cylinder head assembly and two new throttle body adapters included (keep your existing head) please order RR-CNC-650-TWIN-BV-CH.
* Website may not reflect current stock. If there will be a delay in shipping we will contact you. If you want to be certain of availability before placing your order please ring 02 9715 7354 or email firstname.lastname@example.org