The Yokomo B7-S113A piston fits the BD7 2016 short shock and uses a 1.1mm bore with three ports to control oil flow more predictably. That tighter control helps reduce sudden weight transfer and keeps the car composed through technical sections.
The three-hole arrangement in the Yokomo B7-S113A promotes a smoother transition between compression and rebound phases. Racers will notice improved traction and fewer surprises when entering or exiting corners on medium to high grip tracks.
This part is ideal for drivers experimenting with spring rates, shock length, and oil viscosity on the BD7 2016 short shock. It gives clear feedback when testing small setup changes so you can quickly iterate toward a balanced chassis.
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