Replacement 2-Hole 1.6mm Shock Piston for 13mm Shocks Serpent 500901  [SER500901]

Overview: 13mm Shock Piston

The Serpent 500901 piston is specified for 13mm shock assemblies and uses a two-port 1.6mm bore geometry. It functions as a service replacement or as a tuning option when adjusting oil metering is part of suspension setup work.

Tuning impact: Piston porting and bore diameter govern oil passage across the piston and therefore affect damping behavior. A 2-hole 1.6mm piston yields a defined flow characteristic that can be used to refine compression and rebound balance without altering springs or shock mounting points.

Fitting procedure: Place components on a clean surface, remove the shock cap and shaft, extract the old piston, and install the Serpent 500901 unit, verifying thread engagement and o-ring condition. Light lubrication of seals and shaft with shock oil will prevent damage, and cycling the assembled shock will help eliminate air before final refit.

Checks and pairing: This piston is suitable for 13mm bodies that accept replaceable pistons; confirm thread style and shaft compatibility prior to installation. Pair piston choice with appropriate shock oil viscosity and spring rates to achieve predictable handling improvements.