Wilwood Piston Thermlock - 1.25in x .88in

If you're rebuilding your Wilwood calipers, especially for track or performance driving where heat management is key, these piston thermlocks are a smart addition. They're designed to sit behind the piston, acting as a thermal barrier to help keep excessive heat from transferring into the brake fluid. This can make a notable difference in preventing brake fade during demanding use.

These thermlocks measure 1.25 inches in diameter and are 0.88 inches thick. They're made from a material that resists heat transfer, helping to protect your brake fluid from boiling. Installing them is straightforward during a caliper rebuild; they simply fit into the caliper bore behind the piston. It's a small part that can contribute to more consistent braking performance when your calipers are working hard.