Yokomo S4-SB1315 13mm Shock Blank Piston Tunable  [S4-SB1315]

Yokomo S4-SB1315 Blank piston for SO/MO 13mm Shock 1.5mm thickness
Price:
AUD$11.94
Brand:
Yokomo
Model:
S4-SB1315
GTIN:
639342225262
Condition:
Brand New
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Precision Blank Piston for Shock Tuning

The Yokomo S4-SB1315 blank piston is built for hobbyists who want hands-on control over shock behaviour. It features a 13mm diameter and a 1.5mm thickness, giving a stable base for modifying damping by drilling custom holes. This approach helps you tailor suspension feel for both aggressive bashing and smoother track runs.

How to Adjust Damping with Hole Layouts

Using the pre-marked guides you can add from 2 up to 6 holes to shape oil flow and damping characteristics. Adjusting hole number and position provides a quick way to experiment with softer or firmer suspension without changing springs. Designed to fit Yokomo SOR-020, MOR-020 and SOR-020D shock types, it slots into existing setups for direct tuning gains.
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.

Does drilling affect piston strength?

Careful drilling in the marked zones keeps strength acceptable for typical RC use, but avoid oversize holes or rough edges that could weaken the piston.

What hole count gives a firmer setup?

Fewer holes restrict oil flow and yield firmer damping, while more holes increase flow for a softer response. Test incrementally to find the right balance.

Can I use this with stock Yokomo shocks?

Yes, it is intended for 13mm SO/MO shock units and is compatible with SOR-020, MOR-020 and SOR-020D models, though checking internal clearances is recommended.

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