Carburetor Starter Piston Assembly - 54631245000

This is the starter piston complete assembly for the carburetor, positioned at #2 in the carburetor diagram. It controls the initial fuel-air mixture for cold starts by lifting the slide mechanism. A direct OEM replacement for reliable engine starting.

Fits KTM 85 SX 17/14 & 19/16, Husqvarna TC 85, GasGas MC 85 models from 2014-2026, plus broader range of KTM/Husqvarna 125-300 EXC/SX/TC/TE models 2005-2026. Also compatible with select Freeride, XC, and Six Days editions from 1994-2026. Verify your exact model in the compatibility list.

Features a black anodized body with yellow plastic tip and knurled knob for easy manual adjustment. Durable construction resists wear from frequent use in off-road conditions. Ensures precise throttle response during starting.

Installation is straightforward: remove carburetor, replace the old piston assembly, and reassemble. Check jetting before remounting as per service manual. Clean components during service for optimal performance.

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