Whiteline Rear Differential Lock Kit WRX / STI (2002-2007) 3 Series Exhausts Add drivetrain rigidity and precision

Add drivetrain rigidity and precision to your Subaru with our PERRIN Performance Subframe and Differential Lock Down System

Exhaust is three sections – making for the simplest install possible

This module comes with a built-in blue L

7-1/2" tall conical PRO DRY S performance air filter for increased performance

Whiteline Rear Differential Lock Kit WRX / STI (2002-2007) 3 Series Exhausts Add drivetrain rigidity and precisionThe Whiteline rear differential support lock kit for the Subaru WRX STI is simple and inexpensive rear end bushing kit that will make a significant difference in the day to day driving experience of your Subaru. The stock rear end on the WRX & STI can suffer from excessive play and slop as well as the notorious the 1 2 upshift "clunk" due to soft rubber OE bushings. Reinforcing the flimsy stockers with Whiteline's performance polyurethane allows you