Main Jet 155 Keihin for KTM 125-300 EXC/SX and Husqvarna 2003-2016 - 54531623155

This genuine Keihin Main Jet 155 is an essential OEM component for fine-tuning your motorcycle's carburetor. It regulates the fuel-to-air ratio at wide-open throttle, ensuring optimal engine performance and preventing lean or rich conditions. As an original equipment manufacturer part, it guarantees precise flow rates and a perfect fit within the carburetor assembly.

This jet is compatible with a wide range of KTM and Husqvarna two-stroke models produced between 2003 and 2016. It fits KTM 125 EXC, 200 EXC/XC-W, 250 SX/EXC/XC, and 300 EXC/XC/XC-W models. Additionally, it is suitable for Husqvarna TE 125, TE 250, TE 300, and TC 250 models. This includes various special editions like the Six Days, Factory Edition, and XC-W variants.

Constructed from high-quality brass, this main jet is designed for durability and resistance to fuel additives. Precise machining ensures consistent fuel delivery, which is critical for maintaining power and protecting your engine during high-speed operation. Replacing a clogged or incorrect jet is a cost-effective way to restore throttle response and fuel efficiency.

Installation involves removing the carburetor float bowl to access the jet block. We recommend checking your spark plug color and engine behavior after installation to ensure the 155 size is appropriate for your specific altitude and temperature conditions. Always handle brass jets carefully to avoid stripping the threads or damaging the orifice.

Check compatibility list below to see if this part fits your motorcycle model.