Carburetor Main Jet 420 for KTM, Husqvarna, GasGas 2017-2023 - 55431029420

This genuine OEM Main Jet 420 is a critical component for tuning your motorcycle's carburetor. It regulates the fuel-to-air ratio at full throttle, ensuring optimal engine performance and preventing lean or rich conditions during high-speed operation.

This part fits a wide range of 2-stroke models from 2017 to 2023. Compatible bikes include KTM 125 SX, 150 SX, 250 SX, 250 XC, and 300 XC. 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 provides consistent fuel flow and long-lasting durability. Using original equipment manufacturer parts ensures a perfect fit and reliable operation within the Mikuni TMX carburetor system found on these models.

Regularly inspecting and cleaning your carburetor jets is essential for maintaining smooth power delivery. When changing altitudes or riding in different temperatures, swapping to a different jet size may be necessary to keep your engine running at its peak performance.

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