Genuine Mikuni jets provide the best replacement or calibration solution for your aftermarket or OEM Mikuni carburetors.  Do not use an imitation, nothing substitutes for OEM quality and Mikuni jetting is guaranteed to be the exact size indicated because of high manufacturing tolerances.  Whether you're replacing worn or clogged jets or if you are recalibrating the carburetors for performance, the original Mikuni jets offer unmatched flow and performance.  The TM42/11 accelerator pump nozzles meter the fuel that is squirted into the venturi during accelerator pump operation and fits all Mikuni HSR42, HSR45, HSR48 pumper carburetors. 


The TM42/11 accelerator pump nozzles are 27mm long.  Nozzles include o-rings, not pictured.