Yokomo YOKYX40SO Silicon O-ring for Pitching Damper compatible with YRX 12  [YOKYX40SO]

Pitching Damper O-ring

This Yokomo YOKYX40SO silicon O-ring is an RC-scale replacement part intended for pitching damper assemblies identified with YRX 12 in the product name. It is a simple sealing element made from silicone, used where the pitching damper requires a low-friction, oil-resistant ring to preserve internal sealing and consistent damping behaviour.

Installation is straightforward for anyone familiar with damper service, remove the damper assembly, inspect the seating area for debris or cuts, and replace the worn O-ring with a matching orientation. Use compatible shock oil and reassemble the damper following your chassis service routine. The O-ring’s role is to help maintain consistent damper feel by reducing internal leakage and stabilizing the pitching response rather than changing spring rate or damping valving.

The part supports routine maintenance and incremental tuning work on 1/10 scale touring car setups where pitching dampers are used to fine tune body pitch and traction transitions. It is sold as a small accessory for repairs or preventative replacement when original seals show wear.