Prox Main Jet for Keihin Carburetor Size 140

The Prox 140 main jet is a precision component for Keihin carburetors. Designed for motorcyclists and professionals who want to accurately adjust the fuel-air mixture for optimal performance.

• Brand: Prox
• Type: Keihin carburetor main jet
• Size: 140
• Material: Brass
• Compatibility: Fits Keihin carburetor systems
• Construction: Precision-machined design for reliable fuel metering

With this main jet, Prox delivers consistent fuel delivery across a wide range of riding conditions. The 140 size is ideal for tuning the mid-to-high RPM range and helps deliver smoother acceleration, better throttle response, and stable engine performance. Whether you’re tuning your motorcycle, riding recreationally, or engaging in intensive training rides, this component supports precise carburetor calibration for reliable engine operation.