{"product_id":"remus-bmw-n55-f20-f22-rear-sport-exhaust-silencer-m135i-m235i","title":"Remus BMW M135i\/M235i N55 Valved Rear Silencer Backbox Muffler – Axle-Back Sports Exhaust (F20 F21 F22 F23, incl xDrive) | Switchable Flap, OE Valve Control, EC Approved Stainless Steel | 1 Series\/2 Series","description":"\u003cdiv\u003e\n  \u003ch2\u003eSwitchable Rear Box for BMW M135i and M235i, EC Approved Stainless, OE Flap Control\u003c\/h2\u003e\n\n  \u003cp\u003e\n    Give your M Performance hatch or coupe the voice it deserves with this Austrian-made switchable rear box. Designed for the 3.0 turbo straight-six platform, it delivers a deeper, motorsport-inspired soundtrack under throttle while remaining calm and civil on the motorway with the flap closed. The built-in valve works seamlessly with the factory actuator and vehicle electronics for genuine OE-style operation and everyday usability.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Crafted from shot-blasted, corrosion resistant stainless steel and precision welded for strength, this performance rear section reduces back pressure and improves gas flow. The result is a sharper response and a richer tone without unwanted cabin drone. It is EC approved for road use and built to last.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    We have installed this system many times at MJ Modifications in Warwickshire and feedback has been outstanding. Customers praise the clean fit, premium finish and the perfect balance between sporty character and long-distance comfort.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eWhy this upgrade stands out\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eSwitchable sound, aggressive when you want it, refined when you need it\u003c\/li\u003e\n    \u003cli\u003eFactory flap integration via the original actuator and on-board electronics\u003c\/li\u003e\n    \u003cli\u003eShot-blasted stainless construction and high quality welds for durability\u003c\/li\u003e\n    \u003cli\u003eReduced back pressure and improved flow characteristics\u003c\/li\u003e\n    \u003cli\u003eLightweight rear section with precise, OE-like fitment\u003c\/li\u003e\n    \u003cli\u003eHandmade in Austria to exacting standards\u003c\/li\u003e\n    \u003cli\u003eEC approved for road use\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch4\u003eTube diameter\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eStock pipe: 80 mm\u003c\/li\u003e\n    \u003cli\u003ePerformance pipe: 84 mm\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat is included\u003c\/h3\u003e\n  \u003cp\u003e\n    Stainless steel sports rear silencer with valve integration for BMW M135i and M235i models using the OE control system. Tailpipe trims are required and are supplied separately.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eBuild your system\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eAxle-back setup\u003c\/strong\u003e - add:\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eRemus BMW N55 F20 F21 M135i Black Tailpipes, pair\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\u003cstrong\u003eCat-back setup\u003c\/strong\u003e - add:\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eRemus BMW N55 F20 F22 Catback Front Section, for M135i and M235i\u003c\/li\u003e\n    \u003cli\u003eRemus BMW N55 F20 F21 M135i Black Tailpipes, pair\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\u003cstrong\u003eTurbo-back setup\u003c\/strong\u003e - add:\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eRemus BMW N55 F20 F22 F30 F32 Racing Downpipe 200 CPSI, for M135i, M235i, 335i and 435i\u003c\/li\u003e\n    \u003cli\u003eRemus BMW N55 F20 F22 Catback Front Section, for M135i and M235i\u003c\/li\u003e\n    \u003cli\u003eRemus BMW N55 F20 F21 M135i Black Tailpipes, pair\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    Prefer a louder track-biased note Only for off-road or circuit use, a non EC approved racing rear box is available separately.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFitment\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 Series F20 F21 M135i including xDrive, July 2013 onward\u003c\/li\u003e\n    \u003cli\u003e2 Series F22 F23 M235i, 2014 onward\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eProfessional installation\u003c\/h3\u003e\n  \u003cp\u003e\n    We recommend expert fitting. MJ Modifications offers installation at our Warwickshire workshop, request a quote via info@mjmodifications.co.uk.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eCompatibility check before dispatch\u003c\/h3\u003e\n  \u003cp\u003e\n    To ensure perfect fit, add your UK registration or the last 7 of your VIN at checkout and we will verify compatibility prior to shipping.\n  \u003c\/p\u003e\n\n  \u003ch3\u003ePart number\u003c\/h3\u003e\n  \u003cp\u003e088014 0500\u003c\/p\u003e\n\n  \u003ch3\u003eManufacturer and warranty\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Remus\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e 2 year Remus warranty, non transferable\u003c\/p\u003e\n\n  \u003chr\u003e\n\n  \u003cp\u003e\n    Search terms, M135i backbox, M135i rear box, M135i muffler, M135i sports exhaust, F20 performance rear silencer, F21 rear muffler, M235i back box, M235i rear section, F22 performance exhaust, F23 performance muffler, BMW 1 Series sports exhaust upgrade, BMW 2 Series exhaust upgrade, switchable flap exhaust, valve controlled rear box, OE actuator exhaust, EC approved rear silencer, stainless steel rear box, Austrian made muffler, road legal performance exhaust, BMW M Performance exhaust alternative, axle back system, rear section upgrade, performance rear silencer BMW, BMW straight six turbo exhaust.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Remus","offers":[{"title":"Default Title","offer_id":55977410789762,"sku":null,"price":423.31,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/images_7.jpg?v=1763374611","url":"https:\/\/mjmodifications.co.uk\/products\/remus-bmw-n55-f20-f22-rear-sport-exhaust-silencer-m135i-m235i","provider":"MJ Modifications","version":"1.0","type":"link"}