{"product_id":"ams-performance-toyota-gr-supra-street-downpipe-w-gesi-catalytic-converter","title":"AMS Performance Toyota GR Supra Street Downpipe w\/ GESI Catalytic Converter","description":"\u003ch2\u003eOVERVIEW\u003c\/h2\u003e\n\u003cp\u003eThe \"downpipe and tune\" is the single most effective bolt-on for the B58 GR Supra, and the AMS Performance Street Downpipe delivers it while staying street-legal. A 4.5″ full mandrel-bent stainless steel design with a 49-state-legal high-flow GESI catalytic converter, it dramatically lowers back pressure so exhaust gas flows more easily across the turbine wheel — power comes in earlier and spool improves — all with a throaty note and OEM-level fitment. Bolts to the factory location with no cutting.\u003c\/p\u003e\n\u003ch2\u003eSPECS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e304 stainless steel, 4.5″ design reducing to a 3.5″ flex section for maximum volume and flow\u003c\/li\u003e\n\u003cli\u003e49-state-legal high-flow GESI catalytic converter rated to 800+ HP\u003c\/li\u003e\n\u003cli\u003eNewly formulated cat substrate for modern emissions requirements\u003c\/li\u003e\n\u003cli\u003e3.15″ (80mm) outlet — works with stock or aftermarket cat-back systems\u003c\/li\u003e\n\u003cli\u003eTurbine flange with smooth transition from the turbine outlet\u003c\/li\u003e\n\u003cli\u003eThreaded O2 bungs in OEM locations — no jumpers needed\u003c\/li\u003e\n\u003cli\u003eMandrel-bent tubing; complete bolt-on, no cutting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePARTS INCLUDED\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFully stainless steel street downpipe with EPA-compliant GESI catalytic converter\u003c\/li\u003e\n\u003cli\u003eAdjustable mounting bracket\u003c\/li\u003e\n\u003cli\u003eDetailed installation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTECH RESOURCES\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRecommended companions: \u003ca href=\"\/products\/ams-performance-toyota-gr-supra-3-charge-pipe\"\u003eAMS 3″ Charge Pipe\u003c\/a\u003e and \u003ca href=\"\/products\/ams-performance-toyota-gr-supra-intake-manifold\"\u003eAMS Intake Manifold\u003c\/a\u003e. Prefer a catless race version? See our \u003ca href=\"\/products\/ams-performance-toyota-gr-supra-stainless-steel-race-downpipe\"\u003eAMS GR Supra Race Downpipe\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eA supporting ECU tune is recommended to realize the gains.\u003c\/li\u003e\n\u003cli\u003eInstall instructions (PDF): \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0961\/4226\/2579\/files\/supra_downpipe_instructions.pdf?v=1785460189\" target=\"_blank\" rel=\"noopener\"\u003eAMS Supra Downpipe Install Guide\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eInstall\/overview video: \u003ca href=\"https:\/\/www.youtube.com\/watch?v=Xzs-QEkEt7c\" target=\"_blank\" rel=\"noopener\"\u003eAMS Supra Street Downpipe (YouTube)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePART NUMBER\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAMS.38.05.0001-2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eVEHICLE APPLICATIONS\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eToyota\u003c\/td\u003e\n\u003ctd\u003eGR Supra 3.0 (USDM only)\u003c\/td\u003e\n\u003ctd\u003eA90 \/ A91\u003c\/td\u003e\n\u003ctd\u003eB58\u003c\/td\u003e\n\u003ctd\u003e2020–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eUSDM models only; does not fit world-market vehicles. Not available for sale on emissions-controlled vehicles in California without a completed AMS Race Waiver.\u003c\/em\u003e\u003c\/p\u003e","brand":"AMS Performance","offers":[{"title":"Default Title","offer_id":53762160296243,"sku":"AMS.38.05.0001-2","price":1649.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0961\/4226\/2579\/files\/AMS-Supra-Street-Downpipe-12.jpg?v=1785372011","url":"https:\/\/x58cartel.com\/products\/ams-performance-toyota-gr-supra-street-downpipe-w-gesi-catalytic-converter","provider":"x58cartel","version":"1.0","type":"link"}