A 16" disc brake upgrade with 6-piston Wilwood TC6 calipers or machined MFG 6-piston calipers designed for 63-87 GM 5-lug trucks using Wilwood Iron ProSpindles. When purchased with our REAR KIT the front calipers use a larger bore size to keep the front/rear bias proportional.
Note: Requires Wilwood Iron ProSpindles such as 831-15931, 831-15932
Wheel size requirement: Fits inside most 20" wheels.
NOTE: Model years 1963-72 will require updating to 1973-87 ball joint for proper fitment to this ProSpindle. Steering arm tie rod taper differs between 67-70 and 71-87 spindles.