{"product_id":"rvng-4-5-b58-downpipe-for-1-2-3-4-5-7-supra-series-rwd-xdrive-all-generations","title":"Rvng 4.5\" B58 Downpipe for 1\/2\/3\/4\/5\/7\/ Series RWD \u0026 Xdrive – ALL GENERATIONS","description":"\u003ch2\u003eRvng 4.5\" B58 Catless Downpipe – Premium Stainless Steel Performance Upgrade\u003c\/h2\u003e\n\u003cp\u003eUnlock your B58 engine's full potential with the Rvng 4.5\" catless downpipe. By eliminating the restrictive factory catalytic converter, this hand-crafted upgrade reduces backpressure for faster turbo spool, increased horsepower, and a more aggressive exhaust note.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePerformance Gains:\u003c\/strong\u003e 15–20 whp without tune; up to 25–30 whp with ECU tuning.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePremium Construction:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHand-crafted, TIG-welded SS304 stainless steel\u003c\/li\u003e\n\u003cli\u003eCNC tube-bent with smooth radius bends to minimize turbulence and maximize flow\u003c\/li\u003e\n\u003cli\u003eCNC-machined SS304 stainless steel flanges for seamless turbo-to-midpipe transition\u003c\/li\u003e\n\u003cli\u003ePerfect fitment guaranteed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty \u0026amp; Support:\u003c\/strong\u003e Lifetime warranty plus House of Apex \"No Hassle\" satisfaction guarantee (includes fitment assistance).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e All Gen 1 \u0026amp; 2 B58 engines (BMW models; excludes Toyota Supra).\u003ca href=\"https:\/\/www.houseofapex.us\/\" title=\"House of Apex Website\"\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Rvng RaceWorks","offers":[{"title":"Default Title","offer_id":53281749959020,"sku":"sku-45022923915442","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0968\/4448\/0876\/files\/IMG-7691.jpg?v=1773203357","url":"https:\/\/houseofapex.us\/products\/rvng-4-5-b58-downpipe-for-1-2-3-4-5-7-supra-series-rwd-xdrive-all-generations","provider":"House of Apex","version":"1.0","type":"link"}