Brembo 08-13 135i Rear GT BBK 4 Piston Cast 345x28 2pc Rotor Slotted Type-3-Silver

This Brembo GT Big Brake Kit for the rear of your 2008-2013 BMW 135i includes everything you need to significantly upgrade your braking system. You'll get a pair of 4-piston GT calipers, two 345x28mm two-piece rotors with Brembo's Type-3 slotting pattern, caliper mounting brackets, and all the necessary hardware for installation. This kit is designed to handle the demands of spirited driving and track use, offering improved stopping power and heat management.

The 4-piston calipers are cast from aluminum for a good balance of strength and weight, and they work with the larger 345x28mm two-piece rotors to increase the surface area for heat dissipation. The Type-3 slotting on the rotors is a popular choice for performance applications because the slots help to sweep away dust and gas that can build up between the pad and rotor surface. This means more consistent braking performance, especially during repeated hard stops. The two-piece rotor design also helps to reduce unsprung weight and manage heat more effectively compared to a traditional one-piece rotor.

Installing a big brake kit like this is a substantial upgrade, and it's often paired with similar upgrades on the front axle for balanced braking. Make sure to consult the manufacturer's installation instructions for specific details on mounting and any other components you might need to ensure a proper setup. This kit is a solid option for 135i owners looking for a noticeable improvement in braking performance and durability.