Brembo 01-06 M3 Rear GTS BBK 4 Piston Cast 345x28 2pc Rotor Slotted Type-1-Black HA

This Brembo Gran Turismo Sport (GTS) Big Brake Kit for the rear of your 2001-2006 BMW M3 includes everything you need to significantly upgrade your braking performance. You get a pair of four-piston cast iron calipers, two-piece 345mm x 28mm slotted rotors, and all the necessary hardware for installation. This kit is designed to replace your factory rear brakes with a more robust system, offering improved stopping power and heat management for spirited driving and track use.

The calipers are a substantial four-piston design, providing more clamping force than stock, which translates to quicker deceleration. They are finished in a durable black HA coating for a clean look and added protection. The rotors are a two-piece design, meaning the hat and the friction ring are separate. This construction helps reduce weight and allows for better thermal management, as the hat can expand and contract more freely than a one-piece rotor. The 345mm diameter and 28mm thickness offer a larger surface area for heat dissipation and increased braking leverage. The Type-1 slots on the rotor surface are specifically designed to help vent gases and dust away from the pad surface, maintaining consistent braking performance even under heavy use.

Installing a big brake kit like this is a significant upgrade for any M3 owner looking to push their car's limits. While it's a bolt-on affair, it's a job that requires attention to detail. Ensure you have the correct tools and follow the manufacturer's installation guide carefully. This kit is a popular choice for those who track their cars or simply want the confidence of knowing their brakes can handle anything they throw at them.