Torque Solution Solid Billet Positive Shift Kit | 2002-2021 Subaru WRX/STI (TS-SU-PSK-SB)Torque Solution Solid Billet Positive Shift Kit Part #: TS SU PSK SB Overview The Torque Solution Solid Billet Positive Shift Kit is a high quality upgrade designed for Subaru WRX and STI models from 2002 to 2021. Crafted from durable billet aluminum, this shift kit enhances the feel and precision of your vehicles gear changes, providing a more engaging driving experience. It is ideal for enthusiasts seeking improved shift response, a more solid