YRX 12 Spring Cup and O-ring Cap for Pitching Damper - Yokomo YOKYX40SC  [YOKYX40SC]

YRX 12 Pitching Damper Spring Seat and O-ring

This Yokomo YOKYX40SC component is a spring cup and O-ring cap intended for pitching damper assemblies, listed for YRX 12 fitment. It secures the spring seating while the O-ring cap creates a seal that limits oil movement around the damper shaft, which in turn affects pitching characteristics of the suspension.

In use the cup locates the spring and defines its seat height while the O-ring cap offers a straightforward seal to reduce internal fluid migration and minimise unwanted play. Before fitting, check that your YRX 12 damper shaft and spring dimensions match the part profile and select shock oil and spring rates appropriate for the chassis to achieve consistent pitching response.

Assembly tip: push the cup into the damper body to the desired stack, place the spring onto the cup, then compress to fit the O-ring cap so the seal engages without excess preload; confirm smooth shaft travel after reassembly. This item is sold as a 1/10 scale RC accessory for tuning damper behavior.