Set of composite molded surprise pistons for two surprise absorbers with six 1.3mm holes & two 1.1mm holes. Two-way flow surprise pistons work with other ways once the piston travels up or down. Using the rubber valve set up on piston, 2 holes are closed when piston travels up
proper the piston travels down, the valve starts 2 additional holes therefore the oil flows through 8 holes as a whole. This setup allows for perfect landings from jumps, despite having a soft shock set-up. Made of specially-formulated composite product to give smooth action & durability. Well-proven molding procedure ensures perfect piston roundness after manufacturing, so that the pistons move perfectly in the surprise figures for identical shock action in every four shocks.