The Wilwood Dynapro DP caliper is listed as a 1.38 piston model with a .81" rotor and an integrated bridge in the description. It’s a compact caliper option for installations that need a smaller piston pairing while retaining the structural benefits of a bridged design, supplying consistent braking response in a tightly packaged assembly.
Wilwood 1.38 DP Caliper .81 Rotor Ano w/ Bridge