Wilwood caliper piston 1.38 inch by 1.03 inch in stainless steel, supplied for caliper rebuilds requiring that stainless piston size. Stainless construction provides corrosion resistance appropriate for brake environments, and the piston is intended as a direct-fit replacement where a 1.03-inch stainless piston is specified for the caliper design.
Wilwood Piston - 1.38in x 1.03in SS