{"product_id":"bmw-m135i-m235i-335i-435i-m2-catless-downpipe-n55-3-0t-ewg-wstn-performance","title":"BMW M135i\/M235i\/335i\/435i\/M2 Catless Downpipe | WSTN Performance (N55 F20\/F22\/F30\/F32\/F87)","description":"\u003cdiv class=\"wstn-product\"\u003e\n\u003ch1\u003eFree the N55. Remove the restriction.\u003c\/h1\u003e\n\u003cp\u003eBuilt for the N55-powered F-Series platform the M135i, M235i, 335i, 435i, and M2 this catless downpipe eliminates the factory catalytic converter that sits directly downstream of the turbocharger, the single biggest restriction on power and sound in the entire exhaust system. Constructed in 304 Stainless Steel with mandrel-bent piping and precision TIG-welded flanges, every unit is quality checked in Perth before dispatch worldwide. The result: more turbo spool, sharper throttle response, and an exhaust note that does justice to the N55's potential.\u003c\/p\u003e\n\u003ch1\u003eWhy Upgrade?\u003c\/h1\u003e\n\u003cp\u003e✅ Unrestricted Flow: Eliminates the factory cat the biggest single restriction in the N55 exhaust system for immediate gains in spool and response.\u003c\/p\u003e\n\u003cp\u003e✅ Acoustic Transformation: The N55 sounds aggressive and purposeful, not muffled and corporate.\u003c\/p\u003e\n\u003cp\u003e✅ Direct Bolt-On: Bolts directly to factory mounting points. No cutting, no welding.\u003c\/p\u003e\n\u003cp\u003e✅ 304 Stainless Steel Construction: Corrosion-resistant, built to handle the heat and pressure of a turbocharged inline six.\u003c\/p\u003e\n\u003ch1\u003eKey Features \u0026amp; Specs\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e 304 Stainless Steel corrosion resistant, built to last\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDiameter:\u003c\/strong\u003e 4-inch \/ 102mm primary pipe\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConstruction:\u003c\/strong\u003e Precision mandrel-bent, TIG-welded joints\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFinish:\u003c\/strong\u003e Brushed 304 stainless\u003c\/p\u003e\n\u003ch1\u003eFitment \u0026amp; Compatibility\u003c\/h1\u003e\n\u003cp\u003e✔️ BMW M135i \/ M135xi (F20\/F21) 2012–2018 (N55B30, post-07\/2013 production)\u003c\/p\u003e\n\u003cp\u003e✔️ BMW M235i \/ M235xi (F22\/F23) 2013–2018 (N55B30)\u003c\/p\u003e\n\u003cp\u003e✔️ BMW 335i \/ 335xi (F30\/F31) 2012–2015 (N55B30, post-07\/2013 production)\u003c\/p\u003e\n\u003cp\u003e✔️ BMW 435i \/ 435xi \/ Gran Coupe (F32\/F33\/F36) 2013–2016 (N55B30)\u003c\/p\u003e\n\u003cp\u003e✔️ BMW M2 (F87) 2015–2018 (N55B30)\u003c\/p\u003e\n\u003cp\u003eEWG (Electric Wastegate) fitment only fits models produced after 07\/2013. For pre-07\/2013 M135i or 335i, check production date on your door jamb before purchasing.\u003c\/p\u003e\n\u003ch3\u003eTechnical Note\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eEmissions:\u003c\/strong\u003e Catless straight-through intended for track and competition use. CEL will trigger without ECU tune. Buyer responsible for local emissions compliance.\u003c\/p\u003e\n\u003ch1\u003eWhat's In the Box\u003c\/h1\u003e\n\u003cp\u003e1 x WSTN Performance N55 Catless Downpipe\u003c\/p\u003e\n\u003ch1\u003eInstallation\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eDifficulty:\u003c\/strong\u003e 3\/5 Requires workshop lift and exhaust experience\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTime Estimate:\u003c\/strong\u003e 1–2 Hours\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Direct bolt-on to factory turbo outlet flange (EWG models)\u003c\/p\u003e\n\u003ch1\u003eWarranty \/ Shipping\u003c\/h1\u003e\n\u003ch3\u003eDISCLAIMER\u003c\/h3\u003e\n\u003cp\u003eWSTN Performance components are designed for track and competition use. To protect your build and ensure a perfect finish, we recommend professional installation by a certified specialist\/workshop. It is the buyer's responsibility to ensure modifications comply with local regulations.\u003c\/p\u003e\n\u003ch3\u003eWARRANTY\u003c\/h3\u003e\n\u003cp\u003eWe stand behind every product we sell. All WSTN Performance products carry a 1 year WSTN Performance warranty as standard. This covers any manufacturing defects, giving you total peace of mind that your upgrade is built to last. \u003ca href=\"\/en-ca\/policies\/refund-policy\"\u003eView our full Warranty policy page here.\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eSHIPPING\u003c\/h3\u003e\n\u003cp\u003eWe offer tracked worldwide shipping on our entire catalogue. Most of our products are built-to-order: hand-crafted to your engine code, personally quality-checked in Perth WA, and dispatched worldwide. In-stock items dispatch within 2–4 days. All items arrive with full tracking. \u003ca href=\"\/en-ca\/policies\/shipping-policy\"\u003eView our full Shipping policy page here.\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eRETURNS\u003c\/h3\u003e\n\u003cp\u003eWe offer returns on all products if items are damaged or there is something wrong. If we ever make a mistake, we'll cover the return shipping to make it right. \u003ca href=\"\/en-ca\/policies\/refund-policy\"\u003eView our full Return policy page here.\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eSUPPORT\u003c\/h3\u003e\n\u003cp\u003eNeed a hand with fitment, shipping, or a return? Our Perth-based team is here to help you get your build perfect.\u003cbr\u003eEmail: \u003ca href=\"mailto:contact@wstnperformance.com\"\u003econtact@wstnperformance.com\u003c\/a\u003e\u003c\/p\u003e\n\u003ch1\u003eSound Clip\u003c\/h1\u003e\n\u003c\/div\u003e","brand":"WSTN Performance","offers":[{"title":"Default Title","offer_id":50192332816630,"sku":"WSTN-BMW-F20-F21-F22-DP","price":261.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0656\/2955\/2886\/files\/1_3c82004d-6a42-41a1-9eac-f387189db432.jpg?v=1774876850","url":"https:\/\/wstnperformance.com.au\/en-ca\/products\/bmw-m135i-m235i-335i-435i-m2-catless-downpipe-n55-3-0t-ewg-wstn-performance","provider":"wstnperformance","version":"1.0","type":"link"}