{"product_id":"bmw-n55-downpipe-f20-f22-f30-f32-m135i-m235i-335i-435i","title":"BMW N55 Downpipe — E8x \/ E9x \/ F2x \/ F3x (135i \/ 335i \/ 435i \/ M135i \/ M235i)","description":"\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e 2011–2018 BMW 135i, 335i, 435i, M135i \u0026amp; M235i (E82\/E88\/E90\/E92 · F20\/F21\/F22\/F23\/F30\/F32\/F33) — N55 single-turbo 3.0L\u003c\/p\u003e\u003cp\u003eOne downpipe fits every N55 chassis — the N55 uses the same turbo outlet across E- and F-series, so this precision mandrel-bent \u003cstrong\u003estainless steel\u003c\/strong\u003e catless downpipe bolts to OEM locations on all of them. Removing the restrictive cat frees flow for faster spool, a deeper note and real power once tuned.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFits E82\/E88\/E90\/E92 and F20\/F21\/F22\/F23\/F30\/F32\/F33 N55 cars\u003c\/li\u003e\n\u003cli\u003eMandrel-bent stainless steel, TIG-welded, 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\u003eEngine-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":48775880605941,"sku":null,"price":389.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/6868\/5557\/files\/H05561f28f1ea46b28ea9da64f9f12fe35.jpg?v=1787840352","url":"https:\/\/oktanperformance.com\/products\/bmw-n55-downpipe-f20-f22-f30-f32-m135i-m235i-335i-435i","provider":"My Store","version":"1.0","type":"link"}