This GPM MJ1557T set provides an aluminium spur gear adapter paired with a 57T steel spur gear intended for scale RC drivetrains, compatible with the Axial platforms named in the product listing. The adapter separates the mounting interface from the gear, letting the steel 57-tooth spur carry torque while the aluminium adapter secures alignment to the gearbox output.
Designed as a replacement/upgrade part at model scale, the kit focuses on mechanical fit and reliable fastener retention rather than altering wheel or motor performance. When installed correctly the assembly helps maintain concentric gear mesh and reduces slop between the spur and the transmission interface.
Use this set when you need a direct, model-specific spur gear adapter and a 57T steel spur for Axial SMT10/SCX10 II variants, confirming part fit before final installation.
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