Mishimoto MMEXH-WRX-15 Subaru WRX/STI Cat-Back Exhaust, 2015+, Silver Direct fit for the 2015+ Subaru WRX & STI Pipe & Flange Material: 304 Stainless Steel / Weight: 42lbs / Tips: Quad, 3.5 Designed with oval mufflers to prevent highway drone Dyno-proven maximum gains of up to 9 whp and 8 wtq Mishimoto Lifetime Warranty