Brembo 11-12 1M Rear GT BBK 4 Piston Cast 345x28 2pc Rotor Slotted Type-1-Black

This is the Brembo GT Rear Big Brake Kit for the 2011 and 2012 BMW 1M. It's a comprehensive upgrade designed to significantly improve your braking performance, especially under demanding conditions. The kit includes everything you need to replace your stock rear braking system with a much more capable setup, featuring four-piston calipers and two-piece slotted rotors.

At the heart of this kit are the Brembo GT calipers, which are cast from aluminum for a strong yet lightweight construction. They house four pistons, providing more clamping force and better pad pressure distribution compared to typical two-piston factory calipers. This translates to more consistent braking and improved feel. The rotors are a substantial 345mm in diameter and 28mm thick, offering increased thermal mass to resist fade during repeated hard stops. They are also two-piece designs, with a floating hat that helps manage heat expansion and reduce the risk of rotor distortion. The slots on the rotor surface are designed to help vent gases and dust away from the pad surface, maintaining optimal friction and performance.

This kit is a serious upgrade for the BMW 1M, intended for drivers who push their vehicles hard on the track or demand the absolute best in street performance. It's a well-built system that offers a notable improvement in stopping power and heat management. When installing, ensure you follow the manufacturer's instructions carefully, as this is a significant modification to your vehicle's braking system.