Fits 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 and 2014 Mazda Miata MX5. Proudly made in the USA, all Stainless Steel has lifetime warranty.. Designed as a bolt-on replacement for the factory midpipe to carry the 2.5 inch outlet of the factory header, and our RoadsterSport and Racing Beat headers, all the way to your choice of any of our 2.5 inch inlet RoadsterSport mufflers.. Stock midpipe is 20 pounds, our midpipe is 16.5 pounds for total savings of 3.5 pounds. Despite very large resonator, this midpipe will raise the final sound level just sightly because of the higher flow larger diameter tubing.. Sorry, Not CARB approved for California Residents..