RoadsterSport SuperStreet Fits 2016, 2017, 2018, 2019 Mazda Miata MX5 Proudly made in the USA, all Stainless Steel has lifetime warranty. RoadsterSport SuperStreet MX5 Miata Muffler Stainless Steel PREMIUM ADJUSTABLE MX5 Miata Exhaust. Helmholtz Chamber Design Means All the FUN, without the DRONE. Under 14 pounds! Gains 8hp in independent magazine tests!