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

The 345x28mm two-piece rotors in this Brembo GT Big Brake Kit are cast iron, chosen for their ability to handle heat without warping. This kit is specifically for the rear of your 2008-2013 BMW 135i models (E81, E82, and E88 chassis). Brembo designed this kit to give you a significant upgrade in braking performance, especially when you're pushing your car hard or carrying extra weight.

At the heart of this kit are the four-piston calipers, which apply more even pressure across the brake pad surface compared to stock calipers. This means better pad contact and more consistent stopping force. The Type-3 slotted rotors are a key feature here; the slots help to vent gases and dust away from the pad surface, which keeps your brakes working effectively even under heavy use. This is crucial for maintaining confident braking on spirited drives or during track events. The two-piece rotor design also helps manage heat and can make future rotor replacements simpler.

When you're installing a big brake kit like this, it's always a good idea to have a fresh set of brake lines on hand, as they often work best with upgraded components. This Brembo GT BBK is a substantial upgrade for your 135i, offering a noticeable improvement in braking feel and fade resistance. It's a well-built system designed for drivers who demand more from their braking system.