Perrin Short Shifter Adaptor w/Shifter BushingsThe PERRIN Performance WRX Short Shifter Adapter uses a unique way of shortening your shifters throws with out replacing or cutting the length of the shift rod. The PERRIN shifter allows for a 0% 50% reduction in shifter throw, reducing the distance you must move the shifter lever to enter the next gear. Simply loosen the set screws, adjust the adapter and retighten the set screws. It's that simple. PERRIN Short Shift Adapters come with PERRIN shifter