For hobbyists aiming to refine handling or speed, Tamiya offers 48 Pitch Pinion Gears in 13T, 14T and 15T. These help you dial in gear ratios for TRF501X and DB-01 platforms.
The three pinion sizes let you change gearing in small increments so you can match the car to surface grip and driving approach without swapping major components.
Mix these pinions with the listed spur gears to achieve the following ratios:
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