HKS HKS Exhaust - Super Turbo Upgrade your Subaru WRX STI (VAB) or WRX S4 (VAG) with the HKS Super Turbo Muffler Ti — a full titanium cat-back muffler built for drivers who want a meaningful weight reduction alongside a deeper,... $6,300.00 $5,166.00 $6,300.00
