This is a 29-tooth Delrin idler intended for HPI Savage vehicles, with a fluorescent surface finish to speed up inspection during servicing. It functions as an RC-scale spare that routes rotation from the motor spur to downstream gears while keeping noise and friction to a minimum.
Built as a direct replacement, the Delrin construction helps reduce gear whine and provides smooth tooth engagement versus some metal alternatives. The bright finish makes it simpler to spot alignment issues or tooth wear during routine checks. Always verify fit and clearance against your gearbox and bearing locations before installation.
Fitting notes: open the gearbox to inspect nearby bearings and locating pins, set proper gear mesh and axial play, and run a controlled low-speed test to confirm engagement. Use this part to maintain drivetrain dependability rather than to increase output performance.
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