Brembo 11-16 528i Rear GTS BBK 4 Piston Cast 345x28 2pc Rotor Drilled-Black HA

This Brembo Gran Turismo Sport (GTS) Big Brake Kit (BBK) for the rear of your 2011-2016 BMW 528i includes everything you need to significantly upgrade your braking system. You get a pair of four-piston aluminum calipers finished in black, two-piece 345x28mm rotors that are drilled for heat dissipation, and all the necessary hardware to get them installed. This kit is designed to replace your factory rear brakes with a more robust and capable setup, offering improved stopping power and fade resistance, especially during spirited driving or track use.

The calipers are forged from aluminum, which keeps them strong yet relatively lightweight, and feature four pistons that apply more even pressure across the brake pad surface compared to smaller factory calipers. This means better clamping force and more consistent braking. The two-piece rotor design is also a notable upgrade; the aluminum hat stays cooler and reduces the risk of rotor warping, while the cast iron friction ring handles the heat of braking. The drilled holes in the rotors help to vent gases and heat away from the pad surface, which is crucial for maintaining braking performance when things get hot. This kit is a substantial upgrade for drivers who demand more from their vehicle's braking system.

When installing a big brake kit like this, it's always a good idea to refer to the manufacturer's installation instructions for specific details on hardware torque and any required modifications. While this kit is designed as a direct replacement for the factory rear brake components, ensuring proper fitment and function is key. You might also consider flushing and replacing your brake fluid with a high-performance DOT 4 fluid to take full advantage of the new braking hardware.