This Serpent 500901 piston fits 13mm shock assemblies and features a 2-hole, 1.6mm bore configuration, intended for use as a spare or tuning component for 13mm damper systems where oil flow tuning is required as part of setup work.
Tuning notes: Port quantity and bore diameter set the metering characteristics of the piston and therefore influence compression and rebound rates. Using a 2-hole 1.6mm piston gives a particular flow profile that lets you make incremental damping adjustments without altering springs or shock end geometry.
How to install: On a tidy work surface, remove the shock cap and shaft, slide out the old piston, and thread in or press-fit the Serpent 500901 piston as appropriate. Check o-rings and thread condition, lubricate with shock oil to prevent damage, then reassemble and cycle to confirm smooth movement and no trapped air before refitting to the model.
Compatibility notes: The piston is intended for 13mm bodies that accept replaceable pistons; confirm whether your shocks require threaded or press-fit pistons and that the shaft diameter matches the piston. Coordinate piston selection with your chosen shock oil viscosity and spring rates for predictable handling changes.
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