This is Kartboy's Short Shifter for the WRX. It is designed originally to be compatible with the 02-07 WRX 5-speed platform.
The shifter is non-adjustable, mechanically shortening the shift throw length. This is most effective when combined with Kartboy's Polyurethane WRX Shifter Bushings and Rear Shifter Bushing.
Kartboy Part Number: KB-001-2002
If you have a factory short shift kit installed on the vehicle, you actually need the 97-01 shifter, as the diameter is different.