{"product_id":"mmx-performance-g8x-m2-m3-m4-2-piece-floating-rotor-set-rear-370x24mm","title":"MMX Performance G8X M2 \/ M3 \/ M4 2-Piece Rear Rotor Set 370x24mm","description":"\u003cp\u003eThe MMX Performance 2-piece floating rear rotor set is a direct bolt-on upgrade for the factory rear discs on the G80 M3, G82\/G83 M4 and G87 M2, provided your car came with the factory iron brake setup. It replaces the OE one-piece units with a true 2-piece floating design that runs cooler, weighs less, and resists the warping and judder that high-temperature track use can cause on stock rotors.\u003c\/p\u003e\n\u003cp\u003eThe 370mm x 24mm rotor rings are paired with separate hats so the ring can expand radially and axially under heat, instead of fighting against itself the way a one-piece rotor does. That floating construction is what dramatically extends pad and rotor life under repeated heavy braking, and is what allows MMX to engineer larger, more efficient directional cooling vanes inside the rotor casting, increasing cooling efficiency by up to 30% versus OE.\u003c\/p\u003e\n\u003cp\u003eFor G8X M-Cars driven hard, the rear axle is where you feel the OE limits first under sustained track use, heat builds up faster on the smaller rear discs, and the consequence is uneven pad wear and a soft pedal late in a session. The MMX rear pair addresses both: lower steady-state temperatures, more even pad wear, and consistent rear bias session after session.\u003c\/p\u003e\n\u003cp\u003eThe rotor face is slotted (J-hook style) to evacuate gas and pad material under heavy use, and each pair is supplied as left and right-handed directional units so vane geometry is always optimized to the direction of rotation. Bolt-on with no caliper, bracket, or pad changes required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2-piece floating disc design (rotor ring + separate hat)\u003c\/li\u003e\n  \u003cli\u003eDimensions: 370mm x 24mm\u003c\/li\u003e\n  \u003cli\u003eDirect bolt-on replacement for OE iron rear discs\u003c\/li\u003e\n  \u003cli\u003eUp to 30% cooler than OE: up to 30% improvement in cooling efficiency\u003c\/li\u003e\n  \u003cli\u003eLighter than OEM: reduces unsprung and rotating mass\u003c\/li\u003e\n  \u003cli\u003eSKU MMR30-1602-R\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/ind-distribution.com\/collections\/m2-g87\"\u003eBMW M2 (G87)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/ind-distribution.com\/collections\/m3-g80\"\u003eBMW M3 (G80)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/ind-distribution.com\/collections\/m4-g82-g83\"\u003eBMW M4 (G82 \/ G83)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRelated Products\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/ind-distribution.com\/products\/mmr-performance-g8x-m2-m3-m4-2-piece-front-rotors\"\u003eMMX Performance G8X M2 \/ M3 \/ M4 2-Piece Floating Rotor Set, Front 380x36mm (matching front axle set)\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/ind-distribution.com\/products\/mmx-performance-g8x-m2-m3-m4-2-piece-floating-carbon-ceramic-rotor-conversion-rear-370x24mm\"\u003eMMX Performance G8X M2 \/ M3 \/ M4 2-Piece Floating Carbon Ceramic Rotor Conversion, Rear 370x24mm (CCB conversion alternative)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFactory iron brakes only.\u003c\/strong\u003e Cars equipped with factory carbon ceramic brakes (CCB) cannot use this rotor as a direct bolt-on.\u003c\/li\u003e\n  \u003cli\u003ePairs with the matching 380x36mm front rotor set (MMR30-1601-F) for a full-axle upgrade.\u003c\/li\u003e\n  \u003cli\u003eFor an iron-to-CCB conversion, see the matching MMX Performance carbon ceramic rear rotor (MMR30-1604-R).\u003c\/li\u003e\n  \u003cli\u003eIncludes a 1-year manufacturer warranty against defects in materials and workmanship\u003c\/li\u003e\n  \u003cli\u003eDesigned and tested in the United Kingdom\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IND Distribution","offers":[{"title":"Default Title","offer_id":47411627622594,"sku":"MMR30-1602R","price":1557.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/0784\/7874\/files\/MMR-G8X-Rotors-Rear.jpg?v=1776276707","url":"https:\/\/grocerygetterperformance.com\/products\/mmx-performance-g8x-m2-m3-m4-2-piece-floating-rotor-set-rear-370x24mm","provider":"Grocery Getter Performance","version":"1.0","type":"link"}