Thread reducer / adapter bushing

Threaded bushing to reduce a shift knob thread mount from a larger size to a smaller one - i.e. to adapt a larger knob to a smaller stick. I do NOT offer adapters to do the opposite (convert from smaller knob to larger stick) as it yields a poor result; it is better to just buy a new knob in the larger size. NOT FOR USE WITH STOCK KNOBS!  These bushings are for aftermarket knobs & handles with a flat threaded metal surface underneath where a jam nut makes contact to lock the knob in place. The bushing should be glued in place inside the knob with a liquid threadlocker (Loctite) - and should be installed flush with the bottom surface. An oversize jam nut that seats on the outer mount is also required; the special oversize jam nut IS included; DO NOT use a regular nut! ALWAYS CONFIRM your thread sizes before purchase!! Keep in mind either thread could be metric or SAE. Refer to our thread size guide for more info. Thread size is defined by outer diameter AND pitch - both numbers are