The Serpent SER120177 48P 39T aluminium motor pinion is aimed at hobbyists who want repeatable, clean gear engagement. It suits multiple electric motor types and provides a robust alternative to softer materials.
Aluminium pinions are popular because they reduce rotating mass while keeping enough strength for routine hobby use. That combination helps motors run cooler and maintain steady rpm under load.
This 48 pitch, 39 tooth pinion fits a wide range of electric cars and is useful for both practice sessions and competitive tuning. It gives subtle gearing control for better throttle response and smoother operation.
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