Brembo 02-05 7-Series (Through 3/5 Prod) Rr GT BBK 4Pist Cast 2pc 345x28 2pc Rotor Slot Type3-Black

The 345x28mm rotor dimensions on this Brembo GT Big Brake Kit are a key indicator of its performance focus. This rear kit is specifically designed for 2002-2005 7-Series BMWs produced up to March of 2005, offering a significant upgrade over the factory braking components. It features a 4-piston caliper design, which allows for more even pressure distribution across the brake pad surface, leading to more consistent and powerful braking, especially under demanding conditions.

This kit includes 2-piece rotors, where the rotor disc is separate from the hat. This design helps to reduce weight and also allows for better heat dissipation, which is crucial for preventing brake fade during spirited driving or repeated hard stops. The rotors are slotted with Brembo's Type 3 pattern, which helps to clear dust and gas from the pad surface, maintaining optimal friction and performance. The calipers are cast aluminum, balancing strength with a reduction in unsprung weight, which can also contribute to improved vehicle dynamics.

When undertaking a big brake kit installation, it's important to ensure you have all the necessary supporting components. While this kit provides the core braking hardware, you may want to consider upgrading your brake fluid to a higher boiling point type and ensuring your brake lines are in good condition to handle the increased hydraulic pressure. Refer to the manufacturer's installation instructions for detailed guidance on proper fitment and any specific requirements for your vehicle.