{"product_id":"ap-racing-cp9449-pro-5000r-378mm-rear-big-brake-kit-bmw-g8x-m2-m3-m4","title":"AP Racing CP9449 Pro 5000R 378mm Rear Big Brake Kit – BMW G8X M2 M3 M4","description":"\u003cp data-start=\"176\" data-end=\"427\"\u003eThe \u003cstrong data-start=\"180\" data-end=\"233\"\u003eAP Racing Pro 5000R Rear Big Brake Kit (378x32mm)\u003c\/strong\u003e for the BMW F8X platform is designed to complement high-performance front brake setups and deliver balanced, consistent braking performance for fast road, track day and motorsport applications.\u003c\/p\u003e\n\u003cp data-start=\"429\" data-end=\"857\"\u003ePaired with \u003cstrong data-start=\"441\" data-end=\"474\"\u003e378x32mm two-piece rear discs\u003c\/strong\u003e, lightweight aluminium bells and precision mounting brackets, this system significantly improves rear braking stability, thermal capacity and durability compared to the factory rear braking system. The larger disc diameter and floating disc design improve heat management under repeated heavy braking, helping maintain consistent braking performance during demanding track sessions.\u003c\/p\u003e\n\u003cp data-start=\"859\" data-end=\"1443\"\u003eThis kit is supplied with \u003cstrong data-start=\"885\" data-end=\"936\"\u003ehigh-quality aftermarket two-piece discs\/rotors\u003c\/strong\u003e, providing a cost-effective and durable solution for track-driven vehicles. At Clubsport Garage we have tested these discs ourselves on our \u003cstrong data-start=\"1077\" data-end=\"1109\"\u003eF87 M2 Competition track car\u003c\/strong\u003e with excellent results in terms of performance, durability and consistency. A number of customers who previously ran AP Racing discs have also switched to these aftermarket discs\/rotors and reported similarly positive results, making them a compelling option for those looking to reduce running costs without sacrificing performance.\u003c\/p\u003e\n\u003cp data-start=\"1445\" data-end=\"1644\"\u003eThe discs are available in \u003cstrong data-start=\"1472\" data-end=\"1502\"\u003egrooved or J-Hook patterns\u003c\/strong\u003e and are supplied \u003cstrong data-start=\"1520\" data-end=\"1588\"\u003epre-assembled with bells and mounting hardware already installed\u003c\/strong\u003e, ensuring correct fitment and simplifying installation.\u003c\/p\u003e\n\u003cp data-start=\"1646\" data-end=\"2049\"\u003eLike the front AP Racing motorsport calipers, the calipers used in this kit \u003cstrong data-start=\"1722\" data-end=\"1751\"\u003edo not utilise dust seals\u003c\/strong\u003e. This motorsport design allows them to operate reliably at much higher temperatures than typical road calipers. As a result, they are ideal for track and motorsport environments but may require more frequent cleaning and maintenance when used on the road, particularly in harsh weather conditions.\u003c\/p\u003e\n\u003cp data-start=\"2051\" data-end=\"2246\"\u003eAn \u003cstrong data-start=\"2054\" data-end=\"2103\"\u003eoptional anti-rattle\/pad retention spring kit\u003c\/strong\u003e is also available for customers who plan to use the car on the road and want to minimise brake pad movement and noise during everyday driving.\u003c\/p\u003e\n\u003cp data-start=\"2248\" data-end=\"2481\"\u003eDesigned as a \u003cstrong data-start=\"2262\" data-end=\"2318\"\u003ebolt-on upgrade using supplied brackets and hardware\u003c\/strong\u003e, this kit mounts directly to the factory rear uprights and delivers a motorsport-grade rear braking solution that pairs perfectly with AP Racing front brake kits.\u003c\/p\u003e\n\u003cp data-start=\"2483\" data-end=\"2513\"\u003e\u003cstrong data-start=\"2483\" data-end=\"2513\"\u003eFurther information below.\u003c\/strong\u003e\u003c\/p\u003e","brand":"AP Racing","offers":[{"title":"Grooved \/ No Anti Rattle","offer_id":55519939592568,"sku":null,"price":3095.0,"currency_code":"GBP","in_stock":true},{"title":"Grooved \/ Add Anti Rattle","offer_id":55519939625336,"sku":null,"price":3145.0,"currency_code":"GBP","in_stock":true},{"title":"J Hook \/ No Anti Rattle","offer_id":55519939658104,"sku":null,"price":3095.0,"currency_code":"GBP","in_stock":true},{"title":"J Hook \/ Add Anti Rattle","offer_id":55519939690872,"sku":null,"price":3145.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0276\/7375\/5750\/files\/ap-racingcsg-front-378x36mm-brake-kit-bmw-f8x-m2-m3-m4-4528858.webp?v=1769532794","url":"https:\/\/clubsportgarage.co.uk\/products\/ap-racing-cp9449-pro-5000r-378mm-rear-big-brake-kit-bmw-g8x-m2-m3-m4","provider":"Clubsport Garage","version":"1.0","type":"link"}