Wilwood’s exclusive Thermlock® pistons provide the most effective thermal barrier available for minimizing heat transfer from the brake pads to the caliper body, seals and fluid. Originally developed for NASCAR and profession¬al-categor¬y road racing which are known for extreme temperatures and sustained high heat, these two-piece pistons with a stainless steel shield and coated aluminum shell retards heat transfer by at least 25 percent. This reduction in operating temperature eliminates seal crystallization and localized fluid boiling, which decreases distortion in the caliper body and piston bores, extending overall service life.

Thermlock® pistons are standard equipment in all extreme-duty caliper models that include the “ST” model designation, and available as upgrades in any stainless steel piston equipped or older model calipers.

Call us today to get your dealer pricing!

(805) 388-1188