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The Wilwood Thermlock piston, 1.25in x .88in, is a replacement piston variant for compatible Wilwood calipers intended for rebuilds and repairs. The Thermlock name identifies the specific piston type; its stated dimensions ensure correct fit within specified caliper assemblies. Install during caliper service to restore proper piston seating and hydraulic function.
Wilwood Piston Thermlock - 1.25in x .88in
