MIKUNI TMS/TMX Motocross carburetors




Mikuni designed the TMX particularly for 2-stroke engines in motocross, off-road, and ATV racing applications. The TMX features a radial flat slide design, and a lightweight compact body.

The TMX35 is suggested for 125cc race engines, and the TMX38 for Open class machines. An evolution of the popular Mikuni TMX model, the Mikuni TMS38 offers vastly improved mid-range and top-end performance with precise jetability. Design changes include a TMS flatslide throttle with no cutaway. Instead the slide has a specifically designed internal chamber with two metering orifices. There is no screw-in pilot jet, and the pilot fuel is now metered by the jet needle. Tuning is quicker and more simplified with less components. The installation of an optional special jet needle (The Pro Option Needle Kit) in the TMS allows the main jet to be removed.

Available as a complete kit, the 38mm Mikuni TMS carburetor is intended for use in off-road racing applications on 125cc, 250cc two-stroke engines. Kit includes carb, throttle cable, airboot adapter, main jets, jet needles, hose, clamps, pocket tuner and instructions. 

        TMS Applications

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