Hydraulic caliper brake for a bicycle

An apparatus for a bicycle brake comprises a housing (14) with a first piston bore (74) and a second piston bore (86), a first piston (186) disposed in the first piston bore (74), a first piston rod (190) attached to the first piston (186) and extending from the first piston (186) toward the outside of the housing (14) for coupling to a first brake arm (106), and a second piston (318) disposed in the second piston bore (86). The first piston (186) moves along a first piston axis (P1), and the second piston (318) moves along a second piston axis (P2).