Associated RC 18T Main Gear Adaptor Alloy AR115 by GPM  [AR115]

Replacement alloy adaptor for RC18T drivetrains

This is an alloy main gear adaptor made for the Associated RC 18T chassis, supplied as a 1 pcs set with screws and marked AR115. Use it as a durable aftermarket replacement when the original adaptor is worn or when a firmer interface between spur gear and gearbox is required.

Installation notes: position the adaptor on the main gear shaft ensuring correct tooth engagement, fasten with the supplied screws and verify there is no unwanted axial play. Use the proper hex driver size and moderate torque to protect threads, then confirm mesh and backlash after assembly.

Tuning role: the adaptor maintains concentric alignment of the spur gear during rebuilds and routine maintenance, helping to keep gear mesh consistent for cleaner drivetrain performance.