2-Stroke Oxygen Sensor Adapter

KOSO 2-Stroke Oxygen Sensor Adapter

Optimize your 2-stroke engine tuning with the KOSO 2-Stroke Oxygen Sensor Adapter. Designed to work with KOSO wide-band air/fuel ratio gauges, this adapter enables accurate O2 sensor placement on 2-stroke exhaust systems so you can monitor and fine-tune fuel delivery for peak performance and longevity.

• Compatible: Works with KOSO back-lit wide-band AF gauge systems
• Accurate tuning: Provides reliable air/fuel ratio data for precise jetting and ECU adjustments
• Durable construction: Built for high-temperature exhaust environments
• Easy installation: Designed for straightforward weld-in mounting on 2-stroke headers

This product listing includes the gauge, mounting hardware, O2 sensor and the weld-in sensor mount. Note: the dedicated 2-stroke sensor adapter must be purchased separately (P/N 27-5721).

Why choose KOSO? KOSO delivers motorcycle-specific monitoring solutions that are simple to install and engineered for reliable, real-world performance. Use the adapter with your wide-band gauge to prevent lean or rich conditions and protect your engine.