Brembo 15-18 M3 Excl CC Brakes Rr GT BBK 4Pis Cast 380x28 2pc Rotor Slotted Type3-Yellow

The 380x28mm, two-piece rotors in this Brembo GT Big Brake Kit are cast from a high-carbon alloy, a material chosen for its ability to handle the heat generated during hard braking. This kit is specifically for the rear of your 2015-2018 BMW M3, excluding models with CC (Carbon Ceramic) brakes. It’s designed to give you a significant upgrade in stopping performance, especially when you’re pushing your car hard.

At the heart of this kit are the 4-piston calipers. These are larger and more robust than the factory calipers, allowing for more brake pad surface area to contact the rotor. This increased surface area, combined with the larger rotor diameter, means more clamping force and better heat dissipation. The Type 3 slotted rotors are a key component here; the slots help to sweep away dust and gas that can build up between the pad and rotor, ensuring consistent braking performance even under demanding conditions. The two-piece rotor design also helps manage heat and can reduce unsprung weight compared to a single-piece rotor.

Installing a big brake kit like this is a substantial upgrade. It’s a project that requires attention to detail, and you’ll want to ensure you have the right tools and follow the manufacturer’s instructions carefully. This kit is a well-built system designed to work as a complete package, offering a noticeable improvement in braking feel and fade resistance for your M3. It’s a solid option if you’re looking to enhance your vehicle’s braking capabilities for track use or spirited driving.