Brembo 08-13 135i Rear GTR BBK 4 Piston Billet 345x28 2pc Rotor Slotted Type1 - Nickel

The 345x28mm two-piece rotor design in this Brembo GTR Big Brake Kit is a key feature, allowing for better heat dissipation and reduced unsprung weight compared to a single-piece rotor. This kit is specifically built for the rear of your 2008-2013 BMW 135i, aiming to significantly improve your braking performance, especially under demanding conditions. The four-piston billet aluminum calipers are a substantial upgrade over stock, offering increased clamping force and a more consistent pedal feel.

Brembo has engineered this kit with performance in mind. The slotted Type 1 rotors are designed to help clear out brake dust and gases, which keeps the pad surface cleaner and allows for more consistent braking, even during repeated hard stops. The nickel finish on the rotors not only looks sharp but also offers some corrosion resistance. The billet aluminum construction of the calipers means they are both strong and lightweight, contributing to the overall improved handling and braking dynamics of your vehicle.

When installing a kit like this, it's important to ensure all components are properly seated and torqued according to the manufacturer's specifications. This kit is designed to be a comprehensive upgrade, but always refer to the included installation manual for the most accurate guidance. The difference in braking feel and stopping power will be noticeable, especially if you frequently push your 135i or track it.