Associated RC18T 18T Alloy Front/Rear Ball Differential Joint by GPM AR080  [AR080]

Ball differential joint for RC18T

This is an alloy front/rear ball differential joint set designed for use on Associated RC18T scale models. Sold as a 2 pcs set, each joint pairs with its lock nut to secure the ball end into the differential assembly, providing a metal replacement for the original plastic or softer components.

Functionally this part serves as a direct replacement and a tuning option: swapping to alloy joints alters friction characteristics at the output of the differential, which can help fine-tune traction and cornering balance on 1/18 on-road setups. The parts are intended for RC-scale vehicles only.

Installation is straightforward for experienced hobby mechanics: remove the diff housing cover, extract the existing ball joint, install the alloy joint in the same location, and tighten the supplied lock nut to the manufacturer-recommended torque. Basic hand tools are sufficient for the job, and a small dab of threadlocker can be used on the lock nut if long-term retention is required.

Maintenance is standard for metal drivetrain parts: clean after heavy runs, inspect for wear on the ball seat, and replace if play appears. Using compatible lubricants in the differential will help preserve the mating surfaces and maintain predictable behavior.