Each REAR caliper has 4 pistons..

All factory Corvette & the VERY VERY RARE Camaro  rear pistons are 1 3/8 inch dia.

This is the GM Rear Caliper USA resealed.

IF the caliper is rusty inside its no use pretending new seals will fix a leak .. your gotta to resleeve or more econmically look at the fully built replacement caliper assemblies available from us on exchange basic in the end.. but available outright with a deposit pending the return of a functional core.

Delivery within Australia is covered when paid & ordered on line to a street address except WA regional & NT.