The Wilwood DPR-DS is a four-piston, dust-seal radial mount caliper from the Dynapro line, with a forged aluminum body and a Type III anodized finish. The manufacturer lists stainless steel pistons, a 1.25-inch piston bore, 2.46 square inches of total piston area, and a 6.36 square-inch pad area. Integrated dust wiper seals guard the piston area against dirt, debris, and moisture, which suits rally, off-road, and gravel-stage cars. Owners on user forums describe radial-mount Dynapro calipers as easier to work on than lug-mount designs, and they say the thicker radial pad shape can last longer.
Radial mounting is the key fitment question. This caliper is listed as a universal-side, radial-mount unit, so it bolts to a radial-style bracket matched to your spindle and rotor diameter rather than to a stock lug-mount hub. The manufacturer sells matching brackets, such as the 249-14497/98 pair for Asphalt Sprint front spindles that use the 5.98-inch mount and an 11.75-inch rotor. Owners on user forums note that a radial caliper cannot swap onto a lug-mount bracket without a different bracket design, so confirm your bracket before ordering. Search terms for this part include Wilwood DPR-DS radial mount caliper, 1.25 piston 0.500 rotor, Dynapro radial bracket, and Wilwood 120-14698 fitment.
No. The manufacturer lists this caliper as a radial mount, which requires a radial-style bracket designed for your spindle. Owners on user forums report that the radial design uses a different bracket from lug-mount Dynapro versions, so the two are not interchangeable.
The manufacturer recommends Wilwood Hi-Temp 570 grade fluid or EXP 600 Plus for optimum performance. For severe braking or sustained high-heat use, it specifies EXP 600 Plus Racing Brake Fluid.
The manufacturer includes dust boots to keep debris and moisture out of the piston area. Owners on user forums say the seals help in dirty environments, but the manufacturer's install sheets still call for periodic inspection of function, leaks, and wear.
This is a job for someone comfortable with brake hydraulics and bracket alignment, since the caliper must be mounted square to the rotor and the pads must sit flush with the rotor's outer edge. Wilwood's assembly sheets for related radial calipers call for checking wheel clearance before connecting the hose, seating pads with the friction material facing the rotor, and keeping the pad retainer bolt snug without play, as overtightening is a common mistake. Bleed the system starting with the caliper farthest from the master cylinder, and bleed only from the top screws. Keep the bottom bleed screws tight, and bench-bleed a new master cylinder first. Wilwood also recommends bedding in new pads and rotors before hard use.
