This brake caliper piston is suitable for use in the braking system of a Citroën DS from the mid‑sixties and later. The piston transfers hydraulic pressure from the brake fluid to the pads and supports even braking force on the disc. The part is designed for installation in a caliper with a cylindrical bore. The dimensions match a piston diameter of sixty millimetres and a length of about forty‑five millimetres. This sizing supports correct fit, sealing and guidance inside the caliper. In regular operation it helps maintain stable brake response and consistent contact between pads and disc under varying brake loads.
