Billet Aluminum Caliper with Aluminum Pistons

It features robust 1-piece caliper construction from aircraft-grade aluminum, ensuring both light weight and exceptional strength while resisting corrosion. The opposed-piston caliper design optimizes pad grip and minimizes uneven wear, complemented by aluminum pistons that offer superior heat resistance and durability. This kit incorporates 380mm (15-inch) 2-piece vented rotors with a drilled surface and an aluminum center, which reduces rotational mass and contributes to quicker response and shorter stopping distances. The design also minimizes the risk of rotor warpage. Reinforced carbon steel caliper brackets allow these larger-than-OEM calipers to mount directly onto the existing points. Heavy-duty caliper seals are incorporated for sustained high-temperature track use, and stainless steel brake lines provide a faster pedal response by preventing expansion under pressure. Designed for direct bolt-on installation without requiring modifications, this kit ensures compatibility with the 2002-2004 Subaru Impreza STI equipped with OEM Brembo brakes. It requires a minimum wheel diameter of 19 inches (482.6mm) to accommodate the larger caliper and rotor assembly. The kit includes street-performance brake pads and is suitable for performance and racing driving styles.