Main Jet 490 for KTM 125-300 SX/XC and Husqvarna TC/TE 2017-2023 - 55431029490

This genuine OEM Main Jet 490 is a critical component for your motorcycle's carburetor system. It precisely regulates the fuel-to-air ratio during high-throttle operation, ensuring optimal engine performance and power delivery. As an original equipment manufacturer part, it guarantees a perfect fit and reliable operation within the fuel system.

This part is compatible with a wide range of 2-stroke models from 2017 to 2023. It fits KTM 125 SX, 125 XC, 125 XC-W, 150 SX, 150 XC-W, 250 SX, 250 XC, 250 XC-W, 300 XC, and 300 XC-W. It also fits Husqvarna TC 125, TC 250, TE 150, TE 250, TE 300, TX 125, and TX 300, as well as GasGas MC 125 and MC 250 models.

Precision-engineered from high-quality brass, this jet is designed to withstand the harsh environment inside a carburetor. The 490 sizing allows for specific tuning of your engine's fuel curve, which is essential for different altitudes, temperatures, or performance modifications. Using genuine jets ensures consistent flow rates compared to aftermarket alternatives.

Installation involves removing the carburetor float bowl to access the jet block. We recommend checking your spark plug color or using a professional tuner to ensure the 490 size is appropriate for your specific riding conditions. Regular inspection of carburetor components helps maintain peak throttle response and prevents engine lean conditions.

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