Yokomo YOKYS7B Down Stop O Ring damper part  [YOKYS7B]

Down stop O-ring for dampers

This small rubber O-ring functions as a down stop in RC damper and shock assemblies, providing a predictable cushion at the end of compression travel. It is an RC-scale accessory intended to work with damper components where an O-ring style stop is used to limit or soften the bottoming of the piston or shaft.

Installation is straightforward on most shock designs: position the O-ring on the shock shaft or on the lower shock seating area according to your damper's layout, then check travel to confirm the desired down-stop effect. Because designs vary, verify fit on your shock shaft diameter and clearances before final use.

In tuning, the O-ring helps control bottoming feel and can be used to fine-tune small changes in rebound and compression behavior when combined with spring and oil adjustments. Replace when the rubber shows visible wear or permanent deformation to maintain consistent performance.