The innovative Mikuni TMX Series Performance Carburetor features a flat slide throttle design operating in a smooth bore venturi to provide a wider overall powerband, increased peak power and quicker throttle response. The fuel bowl float system features independently moving twin floats, working with a main jet enclosed in a baffle chamber, allowing the TMX to perform smoothly on the roughest terrain without hesitation. TMX Series Carburetors are available in a 35-millimeter bore size for 125cc race engines, and a 38-millimeter bore size for use on 250cc and larger engines.