DHM Stock Valve Ported Cylinder Head

Ported stock head

Much better alternative to a big valve head where the valve seats are too close together

STOCK valve ported cylinder head

Haven’t mounted it yet l am planning to order 186 big bore kit from you. And then mont it. Best regards 😀

Proper flow for the High Comp piston

When I finally felt the need for more power I sent my bike to DHM with a budget in mind and received an absolute beast of a bike in return. I never thought I would feel the back tire move around under acceleration on a Grom. I highly recommend DHM for dialing in the performance that you desire to get the most out of your machine.