Brembo 87-91 928 S4/GT Rear GT BBK 4 Piston Cast 2pc 328x28 2pc Rotor Slotted Type-1-Silver

If you're looking to significantly improve the braking performance of your 1987-1991 Porsche 928 S4 or GT, this Brembo rear Big Brake Kit is a substantial upgrade. This kit replaces your factory rear brake components with larger, more capable parts designed to handle increased thermal loads and provide more consistent stopping power, especially during spirited driving or track use. It's a comprehensive solution for owners who demand more from their braking system.

At the heart of this kit are the Brembo 4-piston cast aluminum calipers, which offer increased clamping force over the stock units. These calipers work with 2-piece, 328x28mm slotted rotors. The larger rotor surface area and thickness help dissipate heat more effectively, reducing the risk of brake fade. The Type-1 slotted design on the rotors helps to sweep away dust and gas buildup, maintaining optimal pad contact and consistent performance. The 2-piece rotor construction also helps manage heat and can simplify rotor replacement down the line.

This kit is designed as a direct replacement for the rear axle of your 928 S4 or GT, ensuring proper fitment with the included components. While this is a significant upgrade, it's important to ensure you have adequate clearance within your wheels for the larger calipers and rotors. We recommend consulting the manufacturer's installation guide for specific details on fitment and any potential requirements for brake lines or master cylinder upgrades that may be beneficial for optimal performance.