The Yokomo YOKPG4837 pinion is a 37-tooth component made specifically for 48 pitch RC drivetrains, finished to a super hard precision standard. It functions as a replacement or tuning pinion to alter motor-to-spur ratios while offering a durable contact surface for typical hobby loads.
Material choice and finish are selected to resist wear during normal use, so run this pinion with compatible 48 pitch spur gears and the correct shaft adapters. Keeping a precise mesh and checking parts for burrs before use will reduce early wear and extend service life.
Care suggestions: ensure the pinion sits square on the motor shaft and that set-screws engage properly, consider threadlocker where metal set-screws are used, and re-check gear mesh after a brief bedding-in run to confirm stable operation.
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