Carburetor Adjustment Screw Spring for KTM 85-300 SX/EXC 1994-2026 - 54531615000

This genuine OEM carburetor adjustment screw spring is designed to provide consistent tension on the adjustment screw. It ensures that your idle or air-fuel mixture settings remain stable during operation by preventing the screw from vibrating loose. As an original equipment manufacturer part, it guarantees a perfect fit and reliable performance within the carburetor assembly.

This spring is compatible with an extensive range of models, including KTM 85 SX, 105 SX, 125 EXC/SX, 150 SX/XC, 200 EXC/XC-W, 250 EXC/SX/XC, 300 EXC/XC-W, and 380 SX/MXC from 1994 to 2026. It also fits Husqvarna TC 85, TC 125, TC 250, TE 125, TE 250, and TE 300 models, as well as GasGas MC 85 models from 2021 to 2026. It is a standard component for many 2-stroke carburetors used across these brands.

Manufactured from high-quality spring steel, this component is built to withstand the heat and chemical exposure typical of a motorcycle engine environment. Its precise winding ensures the correct compression force needed to lock the adjustment screw in place. Replacing a worn or rusted spring is essential for maintaining a smooth idle and crisp throttle response.

Installation is straightforward and typically involves removing the adjustment screw, sliding the old spring off, and replacing it with the new one. It is recommended to inspect this spring whenever you are cleaning or rebuilding your carburetor to ensure it hasn't lost its tension. Proper maintenance of small carburetor components prevents tuning issues and mid-ride adjustments.

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