Koso meters are designed to give riders clear, reliable information in a compact and modern display, making them a smart upgrade for both custom builds and everyday motorcycles.

*Does not fit 2022+ models Our Mini 3 air/fuel ratio meter was especially designed to help you tune your engine. This meter can be easily installed by plugin it to your OEM oxygen sensor and connecting the instrument to a DC 12 V source of power, and you’re ready to go!

  • Bright LED technology for improved visibility
  • Temperature monitoring where supported
  • Fuel level display where supported
  • Designed for straightforward installation where applicable

Specifications

  • *fits only Honda GROM®.
  • Air/fuel ratio meter Range: 12.2 ~ 17.2 | | Unit: 0.1.
  • Display L: if A/F > 17.2 | A: if A/F < 12.2.
  • Effective temperature range 14 ~ 140 °F (‑10 ~ 60 °C)
  • Power DC 12V.
  • Meter standard JIS D 0203 S2.
  • Meter size (W X L X H) 60 x 30 x 11.5mm.
  • Meter weight ±22g.

Why Buy From Hurtle Gear?

  • 100% Genuine Parts
    We supply only authentic motorcycle parts and accessories from trusted, authorised brands.
  • Fast Dispatch from Western Australia
    In-stock items ship quickly from our WA warehouse for reliable Australian delivery.
  • Australian-Based Support
    Get help from real riders who understand the products we sell and the bikes they fit.
  • Trusted by Riders Australia-Wide
    We’ve received thousands of positive reviews across platforms including Google, SmartCustomer, TrustPilot, eBay, Facebook and more.
  • Over 13 Years in Business
    Hurtle Gear has been supporting Australian motorcyclists for more than 13 years.
SKU BA003214
Brand Koso
Product Specifications