Wilwood Thermlock caliper piston measures 1.88" x 1.05" and is intended as a direct replacement piston where Thermlock specification is required. Sized for precise fit in compatible caliper bores, the piston restores proper hydraulic action during rebuilds. Use with correct seals and hardware to re-establish pad travel and maintain consistent braking operation in systems that call for this piston dimension.
Wilwood Piston Thermlock - 1.88in x 1.05in