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Wilwood Thermlock caliper piston, 1.38 inch by 1.05 inch, produced to OEM-compatible dimensions for caliper rebuild applications. This piston serves as a direct-replacement component where the specified Thermlock size is required for proper sealing and pad actuation in hydraulic brake calipers during refurbishment.
Wilwood Piston Thermlock - 1.38in x 1.05in
