Port / Flow / Oversize Valves Honda Grom / Monkey Cylinder Head

Your Cylinder Head must be shipped to us, unless you choose the option to purchase a core head as well. If you purchase a complete core from us you can email us if you are interested in selling your stock core.

This head will outperform most of the aftermarket big valve heads out there currently. If you have the correct setup, this head is capable of making 18+ HP.

It is highly recommended that you also purchase the ported manifold/insulator as well to match the head.

Again, we will purchase your stock cores (head, manifold, insulator) if you would like to send them back after receiving the new head.

This is a Honda GROM / MSX 125 Ported Cylinder Head with High Performance multi angle valve job, heavy duty valve springs and oversize valves.

Increase the flow of your cylinder head for more power and torque. This is a perfect compliment to the big bore kits already available for the GROM / MSX 125 as well as stock engines just looking for more power.

Also available in the drop down list below is the available manifold and insulator. When this item is selected you will receive a new Intake Manifold and Insulator that is Port Matched to the cylinder head or you can send us your cores if you choose as well.

Included in this service is the following:
- Remove Valves/Springs

- Beadblast Combustion Chamber

- Port / Flow Cylinder Head with HP valve job

- Backcut Oversize valves for more flow at all camshaft lifts

- Install New Valve Seals

- Install Oversize Valves/Heavy Duty Springs