Brembo 06 330i Rear GT BBK 4 Piston Cast 345x28 2pc Rotor Slotted Type1-Black

This Brembo GT Big Brake Kit for the rear of your 330i includes everything you need to significantly upgrade your braking system. You get a pair of four-piston GT calipers, two-piece 345x28mm slotted rotors, and all the necessary hardware to get them installed. This kit is designed to give your 330i the stopping power and heat management needed for spirited driving or track use.

The calipers are cast aluminum, which keeps them strong yet relatively light. They feature a four-piston design, meaning more clamping force can be applied to the rotor surface compared to a factory two-piston setup. The rotors are a two-piece design, with a cast iron braking surface and an aluminum hat. This design helps reduce weight and allows for better heat dissipation, as the hat can expand and contract independently of the rotor ring. The slots on the rotor surface help to sweep away dust and gas, which can build up during hard braking and reduce pad effectiveness. This Type 1 slotting pattern is a popular choice for a balance of performance and rotor life.

Upgrading to a big brake kit like this is a substantial change. You'll notice improved pedal feel and much greater resistance to brake fade during repeated hard stops. While this kit is designed as a direct bolt-on for the specified vehicle, it's always a good idea to consult the manufacturer's installation guide for specific torque values and any recommended procedures. Ensure you have the correct tools and consider having a professional perform the installation if you're not comfortable with brake system work.