Amazing product like normal
Added the piston definitely adds back the low-end power after installing cam. And balance the power overall you will feel a bigger difference. And it's wheelie are so much easier now too. David kill it will this!
This is the Upgrade kit for existing DHM customers! If you do not already own a DHM Stage 1 flash or cam package, do not order from this page. You can order a complete kit HERE.
The DH Motoring Stage 3 Package consists of the following:
DHM ECU Flash
DHM High Compression Stock Bore Piston
TB Parts Camshaft
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!
We are not selling preflashed cores as part of upgrade packages. You must send yours in to be updated. This is subject to change, but at the moment there will be no exceptions to this.