The Yokomo YR-10OA is a replacement pack of ball-seat O-rings intended for 1/10 scale formula on-road dampers. This RC-scale accessory supplies a set of O-rings used when servicing or rebuilding dampers on supported YR-10F chassis. The pack is meant to restore proper sealing around ball seats and to help maintain consistent damping performance after teardown and reassembly.
Installation is straightforward for anyone familiar with damper maintenance: remove the shock cap and piston assembly, take out the worn O-ring from the ball seat, fit the replacement O-ring carefully to avoid pinching, then reassemble and test for leaks. Use basic hobby tools and clean working fluid to avoid contaminating the new seals.
In tuning and servicing workflows these O-rings act as consumables: replace them during routine rebuilds, after inspecting piston and shaft condition, or whenever oil leakage or inconsistent damping is observed. They do not change spring rates or damping characteristics directly but ensure the damper retains its intended performance by maintaining a proper seal.
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