SX6R WCCB Carbon-Ceramic Rotor Front Brake Kits offer an extreme performance upgrade featuring WCCB Carbon-Ceramic Dynamic Mount Rotors with Wilwood’s exclusive Bobbin Mounting System. SX6R WCCB kits are engineered to maximize braking capacity inside custom wheels. These brake kits offer a simple bolt-on installation with minor modifications required to the front spindle only and are fully compatible with ABS and OE master cylinder output. SX6R calipers were designed for the specific purpose of providing high capacity braking with large diameter rotors for extreme duty and race vehicles. It is the largest dual purpose caliper Wilwood has produced, providing big brake performance for dual purpose street and track vehicles. 15.00” WCCB rotors are made from a proprietary blend ceramic matrix composite material commonly known as Carbon-Ceramic and dynamically using Wilwood’s proprietary integrated anti-rattle Bobbin Mounting System. WCCB rotors offer higher thermal conductivity and heat capacity in excess of conventional iron or titanium rotors of similar or even greater weight and have been developed to withstand extreme temperatures with the highest possible degree of resistance against distortion, warping, cracking and wear.