Installing this customizer reduces the horizontal shift gap from 1 "to 1/8" instantly! This makes for a much tighter and more responsive feel. 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 easy to install shifter adaptor makes your shifts feel solid and positive This should be the first part you put on your car to improve your driving experience. *Adjustability* The Dewhel 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. shifter adapter is CNC Machined from a single piece of 6061T6 Aluminum Simply add the adaptor to your shifter and drive.