Wilwood Thermlock Caliper Piston

Wilwood Thermlock caliper pistons (also called Thermlock brake caliper pistons) work as a thermal barrier. They reduce heat transfer from the brake pads to the caliper body, seals and brake fluid. They are made for racing and high-performance braking systems.

Key Features:

• Multi-part design: a stainless steel shield combined with a coated aluminum shell
• Reduced heat transfer: Wilwood states the design cuts heat transfer by at least 25 percent
• Longer service life: lower operating temperatures help prevent seal crystallization and localized fluid boiling. They also reduce distortion in the caliper body and piston bores
• Race-proven technology: developed for the sustained high heat of NASCAR and road racing
• Flexible use: available as service replacements or as upgrades for stainless steel piston equipped or older Wilwood calipers

Thermlock pistons help keep brake components cooler and more consistent under hard use. They suit track, street/strip and other performance applications.