Brembo 08-13 135i (E81/E82/E88) Rear GT BBK 4 Piston Cast 345x28 2pc Rotor Slotted Type-3-Black

This is the Brembo Rear GT Big Brake Kit for your 2008-2013 BMW 135i, covering E81, E82, and E88 chassis codes. If you're looking to significantly upgrade your braking performance, especially for track use or spirited driving, this kit is designed to make a substantial difference. It replaces your factory rear brake components with a much more robust setup, featuring four-piston calipers and larger, two-piece rotors.

The calipers are a four-piston cast design, offering increased clamping force and better heat dissipation compared to stock. They work in conjunction with the 345x28mm two-piece rotors. These rotors are slotted with Brembo's Type-3 pattern, which helps to vent gases and debris away from the pad surface, maintaining consistent braking performance even under heavy load. The two-piece construction allows the rotor ring to expand and contract independently of the hat, reducing the risk of thermal stress and warping. This kit is a comprehensive solution for those seeking the ultimate in rear braking capability for their 135i.

When installing a big brake kit like this, it's important to ensure you have the correct tools and follow the manufacturer's instructions carefully. While this kit is designed as a direct replacement for the rear axle, it's always a good idea to inspect your existing brake lines and consider upgrading them to braided stainless steel lines for optimal performance and feel. This kit is a serious upgrade for drivers who demand the most from their vehicle's braking system.