Range composite molded shock pistons for just two shock absorbers with six 1.4mm holes & two 1.1mm holes. Two-way motion surprise pistons utilize various ways once the piston travels up or down. Because of the artificial valve setup on piston, 2 holes are closed whenever piston travels upÂ… appropriate the piston travels down, the valve starts 2 additional holes meaning that your oil methods through 8 holes completely. This setup enables perfect landings from jumps, despite having a soft shock set-up. Created from specially-formulated composite product to give you smooth action & durability. Well-proven molding procedure guarantees perfect piston roundness after production, meaning that your pistons move completely in the shock systems for identical shock action in a lot of four shocks.