HKS Sport Exhaust for 02-07 WRX/STi (31013-BF001) BLE The front rotors save 8

The front rotors save 8 pounds vs stock and 10 for the rear pair

Built shortblock with the entire rotating assembly installed

The STM Evo X Stainless Steel Catback Single Exit Exhaust weighs in at only 18

These are crazy expensive and ship via freight only to the continental USA

(1) F38 Valve Seat

HKS Sport Exhaust for 02-07 WRX/STi (31013-BF001) BLE The front rotors save 8The HKS "Legal Muffler" sport cat back exhaust is designed as a stock replacement system with better looks, performance and sound. Includes the two piece mild steel exhaust with polished stainless steel tip, gaskets and hardware. Vehicle Fitment: 2002 2007 Subaru WRX 2004 2007 Subaru STi Features: Mild Steel Construction Stainless Steel Tip Tip 106mm Piping 75mm Includes: Exhaust Gaskets & Hardware