The SX6R big brake kit is designed for high capacity braking for extreme duty and race vehicles. For street and track applications, the SX6R offers enhanced stopping power while maintaining compatibility with OE master cylinder output and ABS function. At 14”-15” in diameter, these are the largest dual purpose rotors that Wilwood produces. The SX6R WCCB rotors utilize carbon ceramic construction to further maximize braking performance and sustained high heat durability. Both kits require large diameter wheels starting at 18” or 19” depending on the specific kit.