Honda Grom Stage 3 | DHM Piston, ECU Reflash, and TB Camshaft

DH Motoring

Sale price $275.00 Regular price $335.00

Shipping calculated at checkout.

Customer Reviews

Based on 33 reviews
Joaquin Anglada Mulero
Muy bueno

La atención exelente, muy rápido y atento, el kit va de lujo.

Stage 3

Excellent setup, would recommend to any grom owner.

Dominic Wah Yick
2017 Honda grom from Hawaii

Very knowledgeable and helpful. Will definitely be coming back to order more parts.

David Cuevas Rivera
Honda grom stage 3 kit

Excellent kit

Anthony Cerce

Great person to work with. Bike feels amazing after the stage 3 kit and tune. Great customer service and fast turn around.

The DH Motoring Stage 3 Package includes the following:

DHM High Compression Stock Bore Piston
TB Parts Camshaft
NGK CR9E Spark plug with spacer

Honda Monkey Stage 3 kit is available HERE

Combined with your aftermarket intake and exhaust, this is the most you can get out of your Grom without doing any head work. After dyno testing we were repeatedly seeing 13.5hp at the wheels (SAE) run after run! The Stage 3 package makes more power than a stock Grom at every RPM and double the horsepower at 9000+ rpm! 91 octane fuel is absolutely required. Any fuel with a lower octane rating may result in engine damage!

You can choose to receive a preflashed ECU instead of sending yours in. You can also choose to receive a new cylinder matched to the piston if yours is worn. 

This product page is for customers that do not currently have a DHM flash or cam package. If you already own our reflash or cam package, you can purchase the Stage 3 Upgrade HERE.


Install video: