Greddy has just introduced their Supreme SP catback exhaust system for the 2015-16 Subaru WRX/STI. The Supreme SP exhaust features fully hand-welded 304 Stainless-Steel 3’_’_? piping that is carefully routed around the rear differential to a centralized Y-section which connects dual oval mufflers and quad staggered tips in a "tucked-away" layout, for maximum muffler ground clearance. This design ensures and even flow throughout the full system that creates and improves performance with exceptional sound for the EJ powered STI applications. The system is finished off with classic quad Supreme SP 89mm laser engraved GReddy tips and carries a Limited Lifetime Warranty.