{"product_id":"race-rear-exhaust","title":"Race Rear Exhaust","description":"The Supersprint race rear exhaust is a performance-oriented muffler engineered to replace the factory rear component on specific BMW Z4 E85 and Alpina Z4 Roadster S (3.4i) models. It is designed to reduce backpressure, providing a more engaging and aggressive exhaust note while optimizing flow through its 70mm tips.\n\nConstructed from high-grade T304 stainless steel, this race-specification unit is built for durability and consistent performance. The system is compatible with OEM catalytic converters but must be installed in conjunction with Supersprint part 788113 for proper fitment.\n\nPlease note that this product is designated for racing use only and is not for sale or use in California on any pollution-controlled vehicle as per the California Air Resources Board. It is not eligible for lifetime replacement. Precise compatibility includes: Alpina Z4 Roadster S (E85) 3.4i (2003-2006) and various BMW Z4 (E85) models equipped with M54 engines (2.2i, 2.5i, and 3.0i) produced between 2002 and 2005.","brand":"Supersprint","offers":[{"title":"Default Title","offer_id":52663915905336,"sku":"044106","price":969.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687720054.jpg?v=1784330801","url":"https:\/\/store.motormia.co\/products\/race-rear-exhaust","provider":"MOTORMIA","version":"1.0","type":"link"}