Disc brake calipers

The utility model belongs to the technical field of brake equipment, and particularly relates to disc brake calipers which comprise a shell and a mounting frame, the mounting frame is located in an inner cavity of the shell, first piston holes are symmetrically formed in the two ends of an inner cavity of the mounting frame, first pistons are movably arranged in inner cavities of the first piston holes, a second piston hole is formed between the two sets of first piston holes, and the first pistons are movably arranged in the second piston holes. A second piston is movably arranged in an inner cavity of the second piston hole, and a first oil injection hole is formed in the bottom of an inner cavity of the first piston hole. The two sets of first pistons apply thrust to the two ends of the brake pad at the same time, the brake pad and a brake disc can be evenly attached together, the brake pad is more evenly abraded, meanwhile, the brake force is larger, after first piston holes are filled with oil, the oil e