Available on backorder

Valve Spring Kit

Highly recommended if you intend to turn the engine beyond 8,000 RPM

Revelry Racing Valve spring kit for Royal Enfield Twins. Dual springs with titanium retainers. Includes locks and hi-temp Viton valve steam seals.

Product price: $3,530.00
Total options:
Order total:

Worldwide shipping

  • Quality Products
  • Royal Enfield Specialists
  • Award winning Customer Service
Guaranteed Safe Checkout

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 subassembly & throttle body adapter set fully CNC ported with bigger valves.

Includes 8 new valves and 4 new intake 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 your existing cylinder head andthrottle body adapters processed order RR-CNC-650-TWIN-BV-CONV.

* 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

Additional information

Weight 8.0000 kg
Dimensions 60.0000 × 25.0000 × 40.0000 cm


There are no reviews yet.

Be the first to review “CNC BIG VALVE CYLINDER HEAD”

Your email address will not be published. Required fields are marked *