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