At DMG Motorsports, we present the KOSO Honda Grom Mini 3 Air/Fuel Ratio Gauge, a compact tuning tool designed to help monitor engine air/fuel ratio in real time. It plugs into the OEM oxygen sensor and connects to a 12-volt DC power source for straightforward installation. This aftermarket gauge is intended for racing purposes only and does not fit 2022 or newer Honda Grom models.

Features:

• Designed specifically for Honda Grom models
• Plugs into the OEM oxygen sensor
• Air/fuel ratio display range of 12.2:1 to 17.2:1
• Display resolution of 0.1
• 12-volt DC operation
• Compact dimensions: 60 mm x 30 mm x 11.5 mm
• Approximate meter weight: 22 g
• Effective operating temperature range: 14°F to 140°F (-10°C to 60°C)
• JIS D 0203 S2 meter standard
• Top clamp or Mini 3 universal gauge mount sold separately
• Does not fit 2022 or newer Honda Grom models

Fitment