Rear Big Brake Kit

The Ksport BKHD121-447CO Big Brake Kit is a high-performance rear braking upgrade engineered to provide superior stopping power and significantly reduce brake fade, making it suitable for both street performance and track use. The caliper design utilizes an extreme lightweight, one-piece caliper in a differential bore configuration, CNC machined from aircraft-quality billet aluminum. Weighing just over 5 lbs. each, these calipers contribute to reduced unsprung weight. They feature aluminum pistons with high-temperature seals for consistent performance under heat, stainless steel brake pad wear plates, and an opposed piston design that improves pad wear and caliper rigidity over OEM components. The rotors are a 2-piece floating disc assembly, reducing both rotating and unsprung weight. The floating design prevents thermal stress from warping the disc or cupping the braking surface under extreme heat. This specific kit includes cross-drilled rotors, recommended for daily-driven vehicles as they run cooler. The unique slot design expels gas and pad debris faster than conventional patterns while minimizing brake noise. Every rotor is heat-treated and balanced before shipment for optimal performance. Included are stainless steel braided brake lines that resist expansion under pressure, ensuring a firm, consistent pedal feel. The Ksport Supercomp Big Brake Kit is a comprehensive upgrade for enthusiasts seeking serious improvements to their vehicle's braking system.