{"product_id":"bmw-s55-downpipes-f80-m3-f82-f83-m4-f87-m2-competition","title":"BMW S55 Downpipes — F80 M3 \/ F82·F83 M4 \/ F87 M2 Competition","description":"\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e 2015–2018 BMW M3 (F80), M4 (F82\/F83) \u0026amp; M2 Competition (F87) — S55 twin-turbo 3.0L\u003c\/p\u003e\u003cp\u003ePrecision mandrel-bent \u003cstrong\u003estainless steel\u003c\/strong\u003e catless downpipe, TIG-welded with CNC-machined flanges for a factory-fit bolt-on. Removing the restrictive OEM cat frees exhaust flow for faster spool, a deeper note, and meaningful power once tuned.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMandrel-bent stainless steel — corrosion \u0026amp; heat resistant\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on, OEM-location flanges \u0026amp; hangers\u003c\/li\u003e\n\u003cli\u003eBest paired with a supporting tune to clear codes and unlock gains\u003c\/li\u003e\n\u003cli\u003eSee the engine-specific fitting walkthrough in \u003ca href=\"\/blogs\/garage\"\u003eThe Garage\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eCatless \/ de-cat design — intended for off-road \u0026amp; competition use only. You are responsible for emissions compliance where you drive.\u003c\/em\u003e\u003c\/p\u003e","brand":"OKTAN","offers":[{"title":"Default Title","offer_id":48775880638709,"sku":null,"price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/6868\/5557\/files\/H5d37bd466a394e0ca3a26f11d30761efU.png?v=1787840353","url":"https:\/\/oktanperformance.com\/products\/bmw-s55-downpipes-f80-m3-f82-f83-m4-f87-m2-competition","provider":"My Store","version":"1.0","type":"link"}