This rebuild kit contains the consumable O-rings and fastening screws used with Yokomo H.D. Front One-Way and HP Front One-Way (D-021) units for RC-scale models. It is intended to refresh sealing and secure fastening inside the front one-way assembly during maintenance.
Handy for workshop or track checks, the kit helps maintain internal part seating and reduces play that can affect traction response and repeatable setup, while leaving tuning geometry and performance components unchanged.
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