Supercomp Rear Big Brake Kit 8-Piston 400mm x 36mm Rotors

The Ksport Supercomp Rear Big Brake Kit is engineered to deliver superior stopping power for the BMW E53 X5 models from 2000-2006. This kit features an extreme lightweight SuperComp caliper forged from aircraft-quality billet aluminum, equipped with larger pistons for significantly enhanced braking performance compared to OEM designs. The caliper boasts aluminum pistons, high-temperature seals, titanium brake pad retainer clips, and stainless-steel brake pad wear plates, along with machined-in protection grooves. Its opposed piston design improves pad wear and caliper rigidity, while stainless-steel brake lines prevent expansion under pressure. Each caliper requires four brake pads. The braking system includes 2-piece floating disc assemblies designed to reduce rotating and unsprung weight, and to mitigate thermal stresses that can cause warping. The rotors feature a unique slot design that reduces braking noise and expels gas and pad debris efficiently. Rotors are heat-treated and balanced for optimal performance. This specific kit includes 400mm x 36mm cross-drilled rotors, recommended for daily driven vehicles. Buyers can choose between Ksport SC5 Street Pads, designed for street and occasional track use with reduced dust and noise, or Ksport RC5 Race Pads, engineered for extreme track conditions. The kit comes with CNC-machined carbon steel caliper brackets that allow the larger calipers to bolt directly to the OEM caliper location. D.O.T. compliant stainless-steel braided brake lines are standard, improving pedal feel and response. Customization options include various caliper colors, rotor styles (cross-drilled or slotted), and upgrades for center bells and pads. This product is made to order and non-refundable, with a 12-month limited warranty covering manufacturer defects.