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Koso's Mini-3 Air/Fuel Ratio meter is designed especially for Honda GROM 125 (2014-2021) using the OEM existing narrowband o2 sensor located on the right side of the cylinder head. Direct plug and play for 2014-2020 Honda Grom 125.
Gauge mounts (sold separately)
This Gauge will fit the 7/8" Koso Top Clamp for a nice clean installation. For those who are looking for a more simple mounting solution other than the top clamp, an Ultra Slim Mounting Bracket.
NOTE: This gauge works with the existing narrowband o2 sensor on the cylinder head. It does not include any o2 sensor nor will it work with a wideband o2 sensor.
This meter can be easily installed by plugging it into your OEM oxygen sensor and connecting the instrument to a DC 12 V source of power, and you’re ready to go!