Wilwood Piston Thermlock - 1.38in x 1.05in

This is a Wilwood Piston Thermlock, measuring 1.38 inches by 1.05 inches. It's a small but important component designed to help manage heat within your brake calipers. When brakes work hard, they generate a lot of heat, and this thermlock helps to insulate the caliper piston from that extreme temperature. This can lead to more consistent braking performance, especially during demanding use like track days or heavy towing.

Wilwood is known for making solid brake components, and this thermlock is no different. It's a well-built piece that fits directly into compatible Wilwood caliper pistons. By reducing heat transfer to the brake fluid, it can help prevent brake fade, which is that spongy feeling you get when your brakes aren't working as well as they should. It's a simple part to install if you're already rebuilding your calipers, and it's a smart addition for anyone looking to get the most out of their braking system.