Pair of composite molded shock pistons for 2 shock absorbers with eight 1.2mm holes & two 1.2mm holes. Two-way movement surprise pistons work in other ways as soon as the piston travels up or down. Utilising the synthetic valve setup regarding piston, 2 holes are closed whenever piston travels upÂ… appropriate the piston travels down, the valve starts 2 extra holes so your oil techniques through 10 holes entirely. This setup allows perfect landings from jumps, despite a soft shock set-up. Produced from specially-formulated composite item to give you smooth action & durability. Well-proven molding procedure guarantees perfect piston roundness after manufacturing, so that your pistons move totally within the shock systems for identical surprise action in nearly every four shocks.