This maintenance kit provides replacement O-rings and aluminium countersunk washers intended for the rear bulkhead shaft of the Yokomo R12 touring car chassis. Supplied as a compact service pack, the components refresh the sealing interface at the shaft bulkhead and are usable as option parts on compatible GT-series platforms.
For hobby use only, the kit is suitable for both trackside attention and detailed bench servicing. Replacing degraded seals and resetting washer seating helps preserve shaft alignment and reduces rear-end slop that can alter handling characteristics.
Installation is manageable for anyone experienced with R12 rear-end disassembly: remove old rings and washers, clean mating surfaces, insert new O-rings into the grooves, and locate the aluminium countersunk washers so screws finish flush. No specialist tools are required beyond standard RC hand tools.
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