





MALOSSI Air-Fuel Ratio (AFR) Gauge – Ref. 5817539B
Designed for riders who want to monitor the heart of their 4-stroke engine in the city, this MALOSSI gauge displays the air-fuel ratio in real-time thanks to the included lambda sensor. Compact and lightweight, it easily fits on the workbench or can be mounted near the handlebars for quick checks during adjustments or after an intake/exhaust modification.
The device is splash-resistant but not waterproof: avoid direct water jets. Easy to transfer between machines thanks to its internal battery, or to use continuously by connecting it to the vehicle. A practical tool to check if the mixture is too rich (R) or too lean (L) and keep an eye on the AFR — the key data to optimize combustion (ideal gasoline ≈ 14.7).