t's time to power up! Mikuni TMX series carburetors feature a flat sided design in a smooth bore venturi to provide improved throttle response and a wider powerband. Their unique float system allows the TMX series carbs to perform smoothly without hesitation, regardless of the terrain. These Mikuni TMX series carburetors are specifically engineered for dirt bikes and ATVs. Plus, they are available in different bore sizes to fit your performance requirements perfectly.