The Wilwood Dynapro DPR-DS caliper is a dust-seal brake caliper specified for use with a 1.00" rotor and listed with a 1.75 piston size in the description. It’s intended as a compact upgrade component where a sealed caliper is desired, providing a focused braking solution for installations that require environmental sealing and a defined rotor pairing.
Wilwood 1.75 DPR-DS Caliper 1.00 Rotor Dust Seal