• Factory drilled 0.8mm holes • enables a more substantial surprise oil • More constant handling • Set of 4. • Fits X4 & T4
PSS pistons with factory drilled 0.8mm holes (2 in each piston). Allows for a heavier shock oil to be used, for an even more consistent handling. To be used with a PSS surprise system for ULP shocks 308029 and SLP shocks 308039. Set of 4.