The Tamiya 15289 JR RC 8T Pinion Gear Set is designed for Mini 4WD hobbyists who need dependable gear meshing and flexibility during tuning. The pack pairs a metal pinion for longevity with plastic pinions to let you trial different setups without extra expense.
The metal pinion is intended to mount securely on standard motor shafts to reduce slop and tooth skipping. The included plastic pinions are ideal for quick ratio swaps and for testing how changes affect acceleration and top speed on various layouts.
Use this set to refine drivetrain response and achieve more consistent lap times. Simple maintenance like removing grit, checking for damaged teeth, and ensuring correct mesh will extend pinion life and preserve drivetrain efficiency.
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