Supercomp Rear Big Brake Kit 356mm x 32mm 4-Piston Caliper

The KSport Supercomp Rear Big Brake Kit is engineered to deliver superior stopping power for your BMW F31 3-Series Wagon. This comprehensive kit includes 356mm x 32mm rotors and a robust 4-piston caliper system, designed to significantly reduce brake fade and enhance pad cooling during demanding driving conditions. The SuperComp caliper itself is a testament to advanced engineering, forged from aircraft-quality billet aluminum. It features a differential bore configuration with larger pistons compared to Ksport's ProComp calipers, weighing just over 7lbs each. Standard components include aluminum pistons, high-temperature seals, titanium brake pad retainer clips, and stainless-steel brake pad wear plates, all contributing to improved pad wear and caliper rigidity. The kit also incorporates D.O.T. compliant stainless-steel braided brake lines, which enhance pedal feel and response by eliminating line expansion under pressure. This kit utilizes a 2-piece floating disc assembly to reduce weight and prevent thermal stress from warping the rotor. The unique slot design on the rotor aids in reducing braking noise and expels gas and pad debris more effectively. For daily driven vehicles, cross-drilled rotors are recommended for cooler operation, while slotted rotors are suggested for track use. The kit comes standard with Ksport SC5 Street Pads, suitable for street and occasional track use, with an option to upgrade to RC5 Race Pads for extreme track conditions. The caliper brackets are CNC machined from carbon steel to ensure direct bolt-on installation. This product is made to order and is non-refundable. It is designed for 2WD/4WD models of the BMW 3 Series F30/F31/F34 (2012-2019), specifically the 328d, 328d xDrive, 328i, and 328i xDrive with N47 2.0L or N20/N26 2.0L engines. It specifically excludes models with the M Package.