{"product_id":"ecs-tuning-2-piece-lightweight-rear-brake-rotors-pair-336x22-e9x","title":"ECS Tuning 2-Piece Lightweight Rear Brake Rotors (Pair) 336x22mm - Direct Bolt-On, Cross-Drilled \u0026 Slotted, Semi-Floating - Fits BMW E9x (E90\/E92\/E93 335i 335d 330i) and E84 X1 xDrive35i","description":"\u003cdiv\u003e\n  \u003ch2\u003eBMW E9x Rear Performance Brake Discs by ECS Tuning - Two Piece 336 x 22 mm - Pair\u003c\/h2\u003e\n\n  \u003cp\u003e\n    Transform the way your BMW stops with ECS Tuning’s two piece rear brake discs. Lighter, cooler running and engineered for fast road and track day use, these rear rotors deliver sharper pedal feel and confident, repeatable braking. By cutting unsprung weight and rotational inertia by roughly 3 lb per disc, you get crisper turn-in, improved ride control and stronger deceleration without compromising daily drivability.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eWhy enthusiasts choose this upgrade\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eDirect fit for OEM calipers and pads - no modifications, no drama\u003c\/li\u003e\n    \u003cli\u003eSignificant weight saving per disc for faster response and better handling\u003c\/li\u003e\n    \u003cli\u003eSemi floating hat and ring construction to help manage heat growth and reduce the risk of distortion\u003c\/li\u003e\n    \u003cli\u003eDrilled and grooved faces to sweep the pad, clear gas and water, and aid cooling\u003c\/li\u003e\n    \u003cli\u003eHeat treated grey cast iron rings for stable friction and dependable fade resistance\u003c\/li\u003e\n    \u003cli\u003e6061 aluminium bell, hard anodised matte black for strength and corrosion protection\u003c\/li\u003e\n    \u003cli\u003eChamfered drilling and ball end milled slots to help mitigate cracking seen on inferior products\u003c\/li\u003e\n    \u003cli\u003ePainted non-friction areas and internal vents for added protection against salt and grime\u003c\/li\u003e\n    \u003cli\u003ePrecision ground braking surfaces for parallelism and smooth, consistent bedding\u003c\/li\u003e\n    \u003cli\u003eSupplied with stainless rotor set screws to replace rusty factory hardware\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eTechnical details\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePosition: rear axle\u003c\/li\u003e\n    \u003cli\u003eConfiguration: two piece, semi floating, drilled and slotted\u003c\/li\u003e\n    \u003cli\u003eDimensions: 336 mm x 22 mm\u003c\/li\u003e\n    \u003cli\u003eApproximate weight: 15.5 lb per disc vs about 18.5 lb stock\n      \u003cspan style=\"display:block;font-size:0.95em;color:#666;\"\u003e(around 7.0 kg vs 8.4 kg - about 1.36 kg saving per side)\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli\u003eSold as a matched pair\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eReal results you can feel\u003c\/h3\u003e\n  \u003cp\u003e\n    We have run these discs ourselves and the feedback from our customers mirrors our experience - stronger bite, better high-speed confidence and reduced fade on spirited drives. The bell and ring design helps shed heat quickly, while the lighter assembly gives your suspension less work to do for a more composed rear end.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eCompatible BMW models\u003c\/h3\u003e\n  \u003cp\u003eFor platforms using 336 x 22 mm rear discs:\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eE84 X1 xDrive35i - N55 3.0L\u003c\/li\u003e\n    \u003cli\u003eE90 330i - N52 3.0L\u003c\/li\u003e\n    \u003cli\u003eE90 330xi - N52 3.0L\u003c\/li\u003e\n    \u003cli\u003eE90 335d - M57 3.0L\u003c\/li\u003e\n    \u003cli\u003eE90 335i - N54 3.0L\u003c\/li\u003e\n    \u003cli\u003eE90 335i - N55 3.0L\u003c\/li\u003e\n    \u003cli\u003eE90 335xi - N54 3.0L\u003c\/li\u003e\n    \u003cli\u003eE90 335xi - N55 3.0L\u003c\/li\u003e\n    \u003cli\u003eE92 335i - N54 3.0L\u003c\/li\u003e\n    \u003cli\u003eE92 335i - N55 3.0L\u003c\/li\u003e\n    \u003cli\u003eE92 335is - N54 3.0L\u003c\/li\u003e\n    \u003cli\u003eE92 335xi - N54 3.0L\u003c\/li\u003e\n    \u003cli\u003eE92 335xi - N55 3.0L\u003c\/li\u003e\n    \u003cli\u003eE93 335i - N54 3.0L\u003c\/li\u003e\n    \u003cli\u003eE93 335i - N55 3.0L\u003c\/li\u003e\n    \u003cli\u003eE93 335is - N54 3.0L\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation\u003c\/h3\u003e\n  \u003cp\u003e\n    Want a hassle free, professional fitment with proper bedding-in guidance? Book your install with MJ Modifications in Warwickshire. Request a quote at\n    \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eNotes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eFuture friendly: replacement rings are available. Original owners may be eligible for discounted ring pairs with proof of purchase. Contact us for advice.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSearch terms customers use\u003c\/h3\u003e\n  \u003cp\u003e\n    BMW rear brake discs E90, E92 rear rotors, E93 335i rear discs, BMW 335d rear braking upgrade, BMW 330i rear rotor kit, X1 35i rear brake disc set, two piece rear discs BMW, lightweight rear rotors, grooved and drilled rear discs, semi floating brake disc BMW, performance rear brake upgrade, fast road brake discs, track day brake discs, vented rear discs BMW, bell and ring rotor, aluminium hat rear disc, OEM fit rear brake discs, bolt in rear rotors BMW, E9x rear brake upgrade, N54 N55 rear brakes, M57 rear brake discs.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Performance M","offers":[{"title":"Default Title","offer_id":55975247577474,"sku":"ES2986304","price":1018.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/assss324__62973.1533826326.jpg?v=1763321416","url":"https:\/\/mjmodifications.co.uk\/products\/ecs-tuning-2-piece-lightweight-rear-brake-rotors-pair-336x22-e9x","provider":"MJ Modifications","version":"1.0","type":"link"}