Serpent 500899 13mm Damper Spacer for Precision Tuning  [SER500899]

Fine-tune damper response in 13mm shocks

The Serpent SER500899 13mm internal spacer is designed to sit inside 13mm shock bodies and alter internal oil volume, producing measurable changes in damping behaviour. Adjusting the spacer gives a subtle but effective method to change how the damper reacts to compression and rebound events.

Tune by removing shock oil, opening the unit, inserting the spacer according to the shock's internal layout, then refilling and bleeding the shock per standard service practice. Check seals and the shaft during rebuilds to prevent leaks and maintain consistent damping characteristics.

Use spacer modifications alongside controlled oil weight changes and spring adjustments to target low- and mid-speed damping where most chassis balance gains are found. Incremental adjustments and recorded lap comparisons make it easier to find the right setup for different surfaces.

Keep a record of spacer, oil and spring combinations and perform staged tests so each spacer change's impact is clear.