This 56-tooth Delrin main gear is supplied as 1 pc and serves as an aftermarket replacement compatible with Associated RC18T models. It installs in the standard spur carrier and keeps the original motor mounting alignment intact.
Acetal Delrin combines lower friction with good wear resistance compared with basic moulded plastics, helping the gear hold a stable mesh under typical 1/18 electric off-road loads. It is suitable for regular hobby running where a precise tooth profile and low drag are useful.
Installation tips: check pinion and spur teeth for wear before fitting, set backlash using the paper shim method, and verify there is no binding across the gearbox and suspension travel. This gear is intended for maintenance replacement or evaluation during tuning runs.
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