Pair of composite molded components with keyed ball joints for 2 shock absorbers, includes spring lower collar and ball bones. The lower ball joint features a lock expansion which will match the reduced collar which reduces chance for collar disconnection from spring in a collision. Big-bore 16mm pistons are manufactured from specially-formulated composite material to give smoother action and durability. Especially created piston mould and well-proven molding process make sure perfect piston roundness after manufacturing, so that the pistons move perfectly in the shock bodies for identical surprise action in every four shocks.