Yokomo S4-SB1315 13mm Blank Shock Piston 1.5mm  [S4-SB1315]

Adjustable Yokomo Shock Piston for Fine Tuning

The Yokomo S4-SB1315 blank piston gives racers and weekend drivers a simple way to refine suspension behaviour. With a 13mm diameter and a 1.5mm wall thickness, this blank piston is made to let you alter damping response by creating your own hole pattern. The blank design supports tailored setups so you can tune shock action for racing lines or rough bashing tracks.

Customize Hole Patterns for Targeted Damping

This piston can be drilled with between 2 and 6 holes using the pre-marked guides for consistent alignment and balance. Changing the number and size of holes lets you move between softer and firmer shock response without swapping parts. It is made to work with Yokomo SOR-020, MOR-020, and SOR-020D shock assemblies to improve handling and stability on varied surfaces.