Group of composite molded shock pistons for just two surprise absorbers with eight 1.3mm holes & two 1.2mm holes. Two-way movement surprise pistons work with different ways once the piston travels up or down. With all the plastic valve installed on piston, 2 holes are closed whenever piston travels up
proper the piston travels down, the valve starts 2 extra holes therefore the oil flows through 10 holes in total. This configuration permits perfect landings from jumps, even with a soft shock set-up. Made of specially-formulated composite product to present smooth action & durability. Well-proven molding procedure ensures perfect piston roundness after manufacturing, so the pistons move completely inside the shock figures for identical surprise action in all four shocks.