{"product_id":"ecs-tuning-2-piece-lightweight-front-brake-rotors-pair-345x28-m3-e46-z4-m","title":"ECS Tuning 2-Piece Lightweight Front Brake Rotors - Pair (345x28) - M3 E46 \/ Z4 M","description":"\u003cp\u003eDirect bolt-on cross-drilled and slotted replacement - 2-piece semi-floating rotors offer reduced unsprung weight and additional cooling capacity versus OEM for improved braking, handling, and ride quality!\u003c\/p\u003e\u003cp\u003eReduce weight. Reduce heat. Reduce warping.\u003c\/p\u003e\u003cp\u003eECS Tuning engineered 2-Piece semi-floating rotors offer real world benefits that can be felt on both the street and track! Our 2-Piece rotors combine the advantages of weight savings and rapid heat dissipation to provide a rotor superior to stock while preventing warping and extending component life. The reduction of unsprung weight improves handling characteristics under all situations. This reduction in rotational inertia allows for quicker acceleration, decreased braking distances, and more responsive handling.\u003c\/p\u003e\u003cp\u003eFeatures include:\u003c\/p\u003e\u003cp\u003eAluminum hats: To save weight, each rotor ring is bolted to a lightweight aluminum hat made from high quality 6061 aluminum, and hard anodized with an attractive matte black finish that is both durable and corrosion resistant.\u003c\/p\u003e\u003cp\u003eGray cast iron rings: Long known for its wear resistance and stable friction characteristics, cast iron is favored for brake rotors due to its ability to absorb and dissipate large amounts of heat.\u003c\/p\u003e\u003cp\u003e2-Piece construction: Conventional rotors are unable to cope with the stress of drastic heat fluctuations and are prone to warping. ECS 2-Piece semi-floating rotors allow the radial expansion of the rotor ring - preventing warping.\u003c\/p\u003e\u003cp\u003eHeat treated: Heat treating of ECS 2-Piece rotors makes them stiffer and stronger - for improved performance and further prevention of warping.\u003c\/p\u003e\u003cp\u003eDirectionally veined: ECS 2-Piece rotors feature curved, directional veins that accelerate air away from the rotor at a higher velocity, leading to consistent, rapid cooling.\u003c\/p\u003e\u003cp\u003eDrilled and slotted: 2-Piece rotors are cross drilled to promote cross ventilation for improved cooling as well as slotted to clean brake pads and carry away water and brake dust. Cleaner brake pads result in faster, more consistent stopping. Drilled holes are chamfered while slots are machined with a ball end mill - both to prevent cracking that may be present on improperly machined rotors.\u003c\/p\u003e\u003cp\u003eOverall weight savings: This particular ECS 2-Piece rotor weighs only 18 lbs compared to a stock E46 M3 ZCP\/CSL rotor at 19.1 lbs. Lighter rotors reduce unsprung weight and rotational mass to improve both braking and suspension performance.\u003c\/p\u003e\u003cp\u003eManufacturing quality: Non-friction ring surfaces, including internal vents, are painted to resist salt and other corrosives. Ground braking surfaces ensure rings run parallel, and pads bed easily.\u003c\/p\u003e\u003cp\u003eIncludes ECS Stainless Rotor Set Screws to eliminate rusty factory fasteners\u003c\/p\u003e\u003cp\u003eReady for a re-ring? ECS offers discounts on pairs of replacement rotors to the original customer or customers showing proof of ownership. Please contact the Sales Department for additional information.\u003c\/p\u003e\u003cp\u003eFor vehicles with CSL or Competition Package (ZCP) brakes.\u003c\/p\u003e\u003cp\u003eThis Part Fits the Following Vehicles\u003c\/p\u003e\u003cp\u003eMake Model Submodel Engine\u003c\/p\u003e\u003cp\u003eBMW E46 M3 S54 3.2L\u003c\/p\u003e\u003cp\u003eBMW Z4 M Coupe S54 3.2L\u003c\/p\u003e\u003cp\u003eBMW Z4 M Roadster S54 3.2L\u003c\/p\u003e\u003cp\u003e*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.\u003c\/p\u003e","brand":"Performance M","offers":[{"title":"Default Title","offer_id":42447020785852,"sku":"ES2677765","price":753.09,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/9465\/6700\/products\/Untitled-1__99019.1533807708.jpg?v=1673095871","url":"https:\/\/www.nforcd.com\/products\/ecs-tuning-2-piece-lightweight-front-brake-rotors-pair-345x28-m3-e46-z4-m","provider":"Nforcd","version":"1.0","type":"link"}