Carburetor Needle Jet S-4 for KTM, Husqvarna & GasGas 2017-2023 - 55431021400

This genuine OEM Needle Jet S-4 is a precision-engineered component designed for the carburetor's fuel metering system. It plays a vital role in controlling the fuel-to-air mixture during mid-range throttle operation, ensuring your engine runs smoothly and responds accurately to rider input.

Compatible with an extensive range of 2-stroke motorcycles, including KTM 125 SX, 150 SX, 250 SX, 250/300 EXC, and XC/XC-W models from 2017 to 2022. It also fits Husqvarna TC 125/250, TE 150/250/300, and TX 125/300 models (2017-2022), and GasGas MC 125/250 models from 2021 to 2023.

Manufactured to strict factory standards, this brass needle jet ensures consistent fuel atomization and long-lasting performance. Replacing a worn or clogged jet is a cost-effective way to restore lost power and improve overall fuel efficiency.

When performing maintenance, it is best practice to inspect the jet needle for signs of wear alongside this part. Proper cleaning of the carburetor housing during installation will help prevent future clogs and maintain peak engine health.

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