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Cylinder Head Services

Cylinder Head Repair Sevices

If you are going to go big in your displacement, you have to give it some room to breathe! Revolution Performance’s various stages of CNC cylinder head porting and aftermarket parts create the ideal package to make sure your heads perform to compliment any displacement size from stock all the way to our 124" and 131" kits. In essence, you can breathe a little easier with our head services.

Once your cylinder head is received, we log your request into the system and number stamp your head so we can track your parts every step of the way. The heads are disassembled, bead blasted, cleaned and inspected for viability. After insepction, the follwing steps begin.

Stage 1

$579.95

Stage 1 service includes new 1.900" intake valves, seals, bowl blend, and assembled with your stock springs and exhaust valves.

*Recommended for stock to 103" Twin Cam engines for increased torque.*


Stage 2

$929.95

Stage 2 service includes 5-axis CNC porting, larger valves, new guides and seats, new higher lift bee-hive springs and keepers, sand rolled ports and assembled.

*Recommended for stock to 113" cubic inch engines.*


Stage 2 Parts Specifications:
  • EVO: 1.900" intake valves, 1.615" exhaust valves, .650 max lift springs.
  • Twin Cam: 1.900" intake valves, 1.615" exhaust valves, .650 max lift springs.
  • XL883: 1.720" intake valves, 1.480" exhaust valves, .650 max lift springs.
  • XL1200: 1.850" intake valves, 1.615" exhaust valves, .650 max lift springs.
  • S&S: 2.00" intake valves, 1.63" exhaust valves, .650 max lift springs.

Stage 3 and Screamin Eagle Heads

$1249.95

Stage 3 service includes 5-axis CNC porting, larger valves, new guides and seats, new higher lift dual-coil springs and keepers, sand rolled ports and assembled.

*Recommended for 113" cubic inch and larger engines.*

Stage 3 Parts Specifications:

  • Twin Cam: 2.00" intake valves, 1.630" exhaust valves, .675 max lift springs.
  • XL1200: 1.900" intake valves, 1.615" exhaust valves, .675 max lift springs.
  • Thunderstorm: 1.900" intake valves, 1.615" exhaust valves, .675 max lift springs.
  • XB: 1.900" intake valves, 1.615" exhaust valves, .675 max lift springs.

Core Exchange Program

If you’re in a rush and can’t wait, we often have sets of heads ready to go on the shelf for our core exchange program. For an extra $500.00 on top of the service price we will send out a set of heads from our shelf to you. Once you have the stock heads disassembled from the bike, return them to us for inspection. If the heads are in a state that allows us to recondition them for a set of our cores, we will credit you back the core $500.00. Please keep in mind we do not always have every type of head readily available on the shelf. Please call for inventory.

If you have any questions about what setup is right for you, always feel free to contact one of our technicians. We are always ready to help.


Cylinder Head Modification and Repair Services

Our machine shop is equipped with state of the art technology and equipment to offer you quality head services at the most affordable price.

Description Price (U.S.)
Measure Chamber Volume of Cylinder Heads (Pair) $30.00
Mill cylinder head deck (each) $84.95
CNC Combustion Chamber (Per Chamber) $25.00
Machine for compression release(manual) - Twin Cam (each) $54.95
Machine for compression release(automatic) - Twin Cam (each) $114.95
Machine for compression release(automatic) - EVO (each) $159.95
CNC Valve Job - Harley 2 Valve Head - Per Head $124.95
Replace all Seats and Guides with CNC Valve Job - 2 Valve - Per Head $199.95
Replace all Guides with CNC Valve Job - 2 Valve - Per Head $119.95
Replace all Seats with CNC Valve Job - 2 Valve - Per Head $179.95

For more information on Revolution Performance’s warranty, click HERE.


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Millennium Technologies Cylinder Services website link Ballistic Performance Components website link