DH Motoring Stage 3 Performance Package for Honda Grom

DH Motoring Stage 3 Performance Package — Maximum Grom Power Without Head Work

The DH Motoring Stage 3 Package is the ultimate bolt-on performance upgrade for your Honda Grom. Engineered for riders who want every last horsepower without touching the cylinder head, this package delivers proven, repeatable results on the dyno.

What's Included

• DHM ECU Flash — Optimized fuel and ignition mapping for maximum power and reliability
• DHM High Compression Stock Bore Piston — Increases compression ratio using your factory bore for a direct-fit power gain
• TB Camshaft or Decha HR Camshaft — Aggressive cam profile for improved airflow and power across the RPM range
• NGK CR9E Spark Plug with Spacer — Proper heat range for high-compression operation

Dyno-Proven Performance

Combined with your aftermarket intake and exhaust, the Stage 3 package consistently produces 13.5 hp at the wheels (SAE) — run after run. It makes more power than a stock Grom at every RPM and delivers double the horsepower at 9,000+ RPM.

ECU Flash Options

Choose how you want your ECU flashed:

• Send your ECU in — Ship us your stock ECU and we'll flash it for you
• Pre-flashed ECU — Receive a ready-to-install pre-flashed ECU

Requirements & Recommendations

• ⛽ 91 octane fuel is absolutely required. Lower octane fuel may cause engine damage.
• Aftermarket intake and exhaust required to achieve rated power figures
• Oil cooler recommended for sustained high-performance use
• Extra crankcase vents recommended for this kit