Whiteline Rear Differential Lock Kit WRX / STI (2002-2007) 3 Series Exhausts Get that perfect Subaru BBS

Get that perfect Subaru BBS gold right the first time

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

The Logworks software gives you the ability to data log your AFR's onto your laptop for viewing later which is much safer than trying to look at your wideband while you are driving

The mouth of the ALTA inlet hard pipe featrures a CNC’d aluminum coupler with precision machined dual o-ring grooves for the ultimate seal

Whiteline Rear Differential Lock Kit WRX / STI (2002-2007) 3 Series Exhausts Get that perfect Subaru BBSThe 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