8-Piston Billet Aluminum Big Brake Kit

The Ksport SuperComp Big Brake Kit is K-Sport's most extreme brake upgrade, engineered to deliver the highest level of stopping power with larger-diameter disc rotors and an 8-piston caliper design. Constructed for durability and performance, the calipers feature a 1-piece billet aircraft-grade aluminum body for light weight and exceptional strength, while aluminum pistons resist corrosion and improve heat management. The 2-piece vented rotors, made from cast iron with an aluminum center, reduce rotational mass, enhance braking response, and shorten stopping distances. The 2-piece design also minimizes rotor warpage by allowing for more natural expansion and contraction. The kit includes reinforced carbon steel caliper brackets that allow these larger-than-OEM calipers to mount directly to existing points. For sustained high-temperature use, all caliper seals are heavy-duty, and stainless steel brake lines are included to prevent expansion under pressure, ensuring faster pedal response. This big brake kit requires a minimum wheel diameter of 18 inches (457mm) and features 14-inch (356mm) drilled rotors. The kit is specifically designed for the 2005-2007 Subaru Impreza STI.