{"product_id":"ecs-tuning-2-piece-lightweight-front-brake-rotors-pair-345x28-m3-e46-z4-m","title":"ECS Tuning 2-Piece Semi-Floating Front Brake Discs\/Rotors 345mm x 28mm (Pair) - Lightweight Vented Drilled \u0026 Slotted - Fits BMW E46 M3 CSL\/ZCP Competition Package \u0026 Z4M Coupe\/Roadster S54 - Performance Track\/Fast Road Upgrade","description":"\u003cdiv\u003e\n  \u003ch2\u003eLightweight two piece front brake discs for BMW E46 M3 and BMW Z4M, 345 mm x 28 mm set\u003c\/h2\u003e\n  \n  \u003cp\u003eSerious about fast road or track day performance on your M3 E46 or Z4 M. This premium two piece semi floating front disc kit delivers sharper pedal feel, stronger bite, and fade resistance you can trust. Direct fit on CSL and ZCP specifications and a perfect OE-size upgrade for cars running the Competition Package hardware.\u003c\/p\u003e\n  \n  \u003cp\u003eOur team and customers love these discs for the way they cut unsprung mass and keep temperatures under control. The result is more responsive steering, quicker acceleration off corners, and confident stopping even after repeated heavy use.\u003c\/p\u003e\n  \n  \u003ch3\u003eWhy upgrade your front discs\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eReduced unsprung weight for improved handling and ride quality\u003c\/li\u003e\n    \u003cli\u003eLower rotational inertia for faster response and shorter stopping distances\u003c\/li\u003e\n    \u003cli\u003eEnhanced cooling for consistent performance and reduced brake fade\u003c\/li\u003e\n    \u003cli\u003eOutstanding durability to resist distortion under hard use\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eEngineering highlights\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eAlloy hats: lightweight 6061 aluminium hats, hard anodised in matte black for corrosion resistance and long life\u003c\/li\u003e\n    \u003cli\u003eFriction rings: high quality grey cast iron for stable friction and excellent heat absorption\u003c\/li\u003e\n    \u003cli\u003eSemi floating two piece design: allows radial expansion which helps prevent warping under extreme temperature swings\u003c\/li\u003e\n    \u003cli\u003eHeat treated rings for extra stiffness and strength\u003c\/li\u003e\n    \u003cli\u003eDirectional internal vanes: curved airflow path accelerates cooling air for consistent temperature control\u003c\/li\u003e\n    \u003cli\u003eDrilled and grooved faces: evacuate gas, water, and dust, refresh the pad surface, and promote clean, predictable bite\u003c\/li\u003e\n    \u003cli\u003eChamfered holes and precision machined slots to minimise the risk of cracking\u003c\/li\u003e\n    \u003cli\u003ePrecision ground braking surfaces for easy bedding and smooth operation\u003c\/li\u003e\n    \u003cli\u003ePainted non-friction areas, including vents, to resist road salt and corrosion\u003c\/li\u003e\n    \u003cli\u003eStainless rotor set screws included to replace rusty originals\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eReal weight savings\u003c\/h3\u003e\n  \u003cp\u003eEach disc is approximately 18 lb compared with an OEM E46 M3 ZCP or CSL front disc at 19.1 lb. Less mass at the wheel means livelier turn-in and a more connected feel.\u003c\/p\u003e\n  \n  \u003ch3\u003eSizing and fitment\u003c\/h3\u003e\n  \u003cp\u003eFront axle disc pair, 345 x 28 mm.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eBMW M3 E46, S54 3.2\u003c\/li\u003e\n    \u003cli\u003eBMW Z4 M Coupé, S54 3.2\u003c\/li\u003e\n    \u003cli\u003eBMW Z4 M Roadster, S54 3.2\u003c\/li\u003e\n    \u003cli\u003eFor vehicles with CSL or Competition Package ZCP front brakes\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eIdeal for\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eBMW E46 M3 front brake discs upgrade\u003c\/li\u003e\n    \u003cli\u003eZ4M performance brake discs 345 mm\u003c\/li\u003e\n    \u003cli\u003eFast road and track day semi floating rotors\u003c\/li\u003e\n    \u003cli\u003eDrilled and grooved vented front discs for M3 and Z4M\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eInstallation\u003c\/h3\u003e\n  \u003cp\u003eLooking for professional fitting. Book with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and availability.\u003c\/p\u003e\n  \n  \u003ch3\u003eWhat you get\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 x front disc pair, 345 x 28 mm, semi floating two piece construction\u003c\/li\u003e\n    \u003cli\u003eStainless rotor set screws\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003cp\u003eUpgrade your stopping power with confidence. These lightweight, vented, drilled and slotted front discs are a direct replacement that deliver track-proven performance on the road and circuit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Performance M","offers":[{"title":"Default Title","offer_id":55975247380866,"sku":"ES2677765","price":753.09,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/Untitled-1__99019.1533807708.jpg?v=1763321407","url":"https:\/\/mjmodifications.co.uk\/products\/ecs-tuning-2-piece-lightweight-front-brake-rotors-pair-345x28-m3-e46-z4-m","provider":"MJ Modifications","version":"1.0","type":"link"}