The 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) style units for RC-scale models. It is aimed at maintenance and component refresh to restore sealing and secure fastening inside the front one-way assembly.
Handy for trackside or workshop servicing after long runs, the kit helps keep internal parts seated and reduces unwanted free play that can affect traction and setup repeatability, without changing tuning geometry or other performance components.
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