One of the most common wear items in the Miata/RX7 5-speed that causes slack in shifting is
the shifter collar bushing. Over time, the plastic OEM piece is subjected to heat and pressure,
which causes the bushing to loosen, expand, deform, and/or break apart. The Circuit Sports new brass
shifter collar bushing eliminates this slack and allows for long lasting performance as well as
prevents damage and wear to other transmission components. For the most noticeable
difference, pair this with a shifter rebuild for the ultimate shifter refresh and feel. Compatible
with OE shifter as well as MiataRoadster shortshifter kits.