Wilwood positions this DynaPro lug-mount caliper as the newer successor to its long-running Dynalite line, and it is built as a forged billet, four-piston unit in a red finish. Its four stainless pistons carry a combined piston area of 3.00, and the body has no dust boots, which suits track use where grit gets into the bores. One owner on a user forum who tracks his car chose stainless pistons over dust-booted ones for that reason. Compared with a stock single-piston or a cheaper generic caliper, this unit targets repeatable pedal feel and heat resistance for competition or hard street-track use.
Because the manufacturer lists it as a universal mount, it is not a vehicle-specific bolt-on. The mount center is 5.25 inches, the rotor width is set for 0.81 rotor and the listed maximum rotor diameter is 13.06 inches. Search terms for this part include 5.25 mount Wilwood caliper, 1.38 stainless piston lug caliper, 0.81 rotor caliper, and Dynapro universal track caliper. Confirm bracket and spindle compatibility with the manufacturer before ordering.
The manufacturer lists it as a universal mount rather than a vehicle-specific caliper, so you will need a bracket and hub setup that matches the 5.25-inch mount center and 0.81-inch rotor width. Confirm compatibility with the manufacturer before ordering.
No. The manufacturer's listing shows no dust boot on this caliper, which is why owners on user forums who track their cars often choose it.
Owners on user forums describe a rebuild as replacing the square seals and pistons, with the seals lubricated before the pistons are pressed in by hand.
Installation is best suited to an experienced DIY builder because the caliper depends on a custom or selected bracket and matching rotor, not a plug-in fit. Per the manufacturer's assembly sheets for Dynapro kits, the rotor should be centered in the caliper window when viewed through the top opening. Shims are used between the caliper and the bracket to set alignment. In those kit instructions, the caliper lock nuts are torqued to 30 ft-lb, and pads are bedded per the manufacturer's procedure. Keep the wheel-to-caliper clearance in mind during fitment; the manufacturer's Dynapro-related sheets call for a minimum of 0.080 inch clearance in all areas.
