1mm Three-Hole Damper Piston for R/C Shocks - Yokomo YOKBDS103  [YOKBDS103]

Yokomo BD-S103 - 3 Hole Piston (1mm)
Price:
£4.24
Brand:
Yokomo
Model:
YOKBDS103
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What the 1mm Three-Hole Piston Does

This Yokomo YOKBDS103 3 hole piston is an RC-scale damper part intended for use inside shock bodies to alter oil flow and damping behaviour. The 1mm three-hole pattern offers a specific bleed characteristic useful when refining mid-to-high speed damper response during setup.

Practical fitting advice: fit the piston so it moves freely on the shaft, ensure hole orientation matches across paired shocks, and pair the piston with the correct oils and seals. It is an efficient way to change the damper's hydraulic response without replacing the entire shock unit.

Maintenance and testing: three-hole pistons alter flow dynamics relative to fewer-hole pistons, influencing compression and rebound balance. Test incremental changes in both piston choice and oil weight to stabilise lap-to-lap performance.
Remark :
Due to limited stock availability, please notice that some Yokomo items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

How often should I inspect the YOKBDS103 piston and related seals?

Inspect the piston and seals after heavy runs or every few race sessions; look for scoring on the shaft, clogged holes, and seal wear that can alter damping performance.

What testing approach helps verify the piston choice is correct?

Use systematic tests: change only one variable at a time, run consistent laps, and note differences in corner entry, mid-corner stability, and exit to confirm the impact of the three-hole piston.

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