Brembo 19+ 330i Rear GT BBK 4 Piston Cast 380x28 2pc Rotor Slotted Type3-Black

If you're looking to significantly improve the stopping power and heat management on your 2019 and newer BMW 330i, this Brembo GT Big Brake Kit for the rear is a serious upgrade. This kit replaces your factory rear brake components with a much larger and more robust setup designed to handle repeated hard braking without fading. It's built for drivers who push their cars hard, whether on the track or during spirited driving on winding roads.

At the heart of this kit are the massive 380x28mm two-piece rotors. The two-piece design allows the rotor and the hat to expand and contract independently with heat, which helps prevent warping and cracking over time. These rotors are slotted with Brembo's Type 3 pattern, which helps to sweep away dust and gas that can build up between the pad and rotor surface, ensuring consistent grip even under extreme temperatures. The calipers themselves are Brembo's well-known 4-piston GT units, cast from durable aluminum for a strong yet lightweight housing that resists flex. This combination of larger rotors and multi-piston calipers means more pad surface area and greater clamping force, directly translating to shorter stopping distances and improved brake feel.

This kit comes with everything you need to get these powerful rear brakes installed, including the calipers, rotors, mounting brackets, and stainless steel brake lines. The stainless steel lines are a crucial part of the upgrade, as they don't expand under pressure like rubber lines, providing a firmer and more responsive pedal feel. While this is a significant upgrade, it's designed to be a direct bolt-on for the specified 330i models, meaning no welding or major modifications are typically required. You'll want to ensure your front brakes are also up to the task, as a balanced braking system is key to optimal performance.