This is a low‑cost replacement pinion intended for scale Kyosho motorcycle RC models, supplied as 1 pcs. The part is made from #45 steel and carries a 12T tooth count, matching the form factor used on many model motorcycle motors where a 12T pinion is specified.
The gear is intended for direct motor‑shaft mounting on RC motorcycle motors; installation requires fitting the pinion onto the motor shaft, aligning tooth mesh with the spur or gearbox input, and securing the set screw. Check shaft diameter and set screw position before installation to ensure a proper fit and to avoid mis‑mesh.
In tuning terms a 12T steel pinion offers a predictable contact profile and increased wear resistance compared with softer materials, affecting acceleration and top‑end characteristics according to final gear ratio. Use this part when a durable, standard‑size motor pinion is required for scale motorcycle motor setups.
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