Wilwood Caliper-Kart 1.00in Pistons .18in Disc

This is the Wilwood Caliper-Kart, a 1.00-inch bore caliper built for racing applications like go-karts and Jr. Dragsters. It's designed to work with rotors that are 0.18 inches thick. The unique self-retracting piston system is a key feature here; it automatically pulls the piston back as brake line pressure drops, which helps maintain a consistent feel at the brake pedal.

Wilwood constructed this caliper from billet aluminum and gave it a blue anodized finish for a clean look. It weighs in at a light 1.20 pounds, making it a good choice when every ounce counts. Inside, you'll find a deep cup stainless steel piston, which helps reduce heat transfer to the brake fluid, and it comes pre-loaded with high-performance, high-friction brake pads. The internal fluid passage is neatly integrated, and it includes a cotter pin and pad retainer for secure mounting.

This caliper can be mounted on either side of the vehicle, offering flexibility in setup. Wilwood also offers a specifically designed master cylinder that pairs well with this caliper if you're building a complete system.