The Wilwood Superlite front big brake kit for 1963–1987 C10 applications includes a compact BBK package built around a 13-inch slotted rotor, FNSL6R caliper hardware and a 6x5.5 bolt circle, finished in black. It's specified to work with CPP spindle setups and provides a ready-made upgrade path for classic C10 trucks that require larger stopping components while retaining correct mounting geometry.
Wilwood 63-87 C10 CPP Spindle FNSL6R Front BBK 13in Slotted 6x5.5 BC - Black