The power jet which is installed in some MIKUNI TMX carburettors provides the possibility of using a smaller main jet and therefore enabling the range between 3/4 throttle and full throttle to run more leanly. This means that the torque improves on straights. So that the mix does not get leaner under full load because of the smaller main jet, this is where the power jet comes in and injects additional mix into the carburettor at full throttle. We stock the original MIKUNI power jets for the MIKUNI TMX 27/30 in the sizes 30-85 and in the sizes 30-80 for the MIKUNI TMX 38.
Conclusion: Top jets from the original manufacturer. Quality does matter!
SIP-TIP: Order a leaner main jet (part no 4070 + jet size) at the same time.