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

Yokomo S4-SB1315 Blank piston for SO/MO 13mm Shock 1.5mm thickness
Price:
NZD$13.69
Brand:
Yokomo
Model:
S4-SB1315
GTIN:
639342225262
Condition:
Brand New
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alt="Yokomo S4-SB1315 Blank piston for SO/MO 13mm Shock 1.5mm thickness" title="Yokomo S4-SB1315 Blank piston for SO/MO 13mm Shock 1.5mm thickness"

Tune Shocks with the Yokomo S4-SB1315 Blank Piston

The Yokomo S4-SB1315 blank piston is aimed at tuners who want to refine suspension setup. Measuring 13mm across with a 1.5mm section, it lets you adjust shock behaviour by creating a personalised hole layout. That flexibility helps when switching between tight track runs and rough off-road sessions.

Drill Patterns to Control Damping

The blank face includes guide marks so you can safely add between 2 and 6 holes for different damping profiles. More or fewer holes alters fluid flow and therefore shock response, giving you a practical way to test setups. It fits Yokomo SOR-020, MOR-020 and SOR-020D shock assemblies for straightforward upgrades to handling and balance.
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.

What hole counts suit track versus off-road?

Lower hole counts usually slow oil flow for firmer damping on smooth tracks, while higher counts allow quicker flow for a softer feel on rough surfaces.

Which drill sizes should I use?

Small precision bits in a pin vise are best. Start small and open holes gradually to fine tune damping without overcutting.

Is the piston compatible with standard Yokomo shocks?

Yes, the piston is designed for 13mm SO/MO shocks and works with Yokomo SOR-020, MOR-020 and SOR-020D setups, but always verify fit before final assembly.

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