H&R Springs Sport Lowering Spring Kit Subaru WRX / STI 2004-2007 | 54457 vendor_Cometic The section of the catback

The section of the catback that bolts to the downpipe is slip-fit

and ease of adjustment

Part #: 20-0180

The outlet (side port) of the AOS is plumbed back to the turbo inlet pipe

Part #: 231580

H&R Springs Sport Lowering Spring Kit Subaru WRX / STI 2004-2007 | 54457 vendor_Cometic The section of the catbackPart #: 54457 On this page, you are looking at the H&R Sport Springs. The Sport Springs are one of the most popular upgrades in the H&R catalog, and they improve the looks and handling of your vehicle while providing a superb ride quality. Here are the details: Lowers the center of gravity Reduces body roll Reduces wheel gap Lower wind resistance Front drop height 1. 4" Rear drop height 1. 3"