The Yokomo YR-10O is an O-ring engineered for the ball seat used in YR-10F dampers, serving as a direct replacement seal for RC shock assemblies. It helps preserve oil at the ball-seat interface and reduce lateral play that can degrade damper feel.
Fitment is simple for anyone familiar with shock service: remove the shock cap and ball seat, clean mating surfaces, seat the O-ring into the groove, then reassemble and cycle the shock to verify smooth movement and proper sealing.
Keeping the O-ring in good condition supports consistent rebound and damping by preventing gradual oil loss and limiting small ball-seat movement that can alter performance. Replace as part of normal shock maintenance when wear or leakage appears.
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