This steel pinion is supplied as an RC replacement part for Kyosho Inferno models that use a 0.8M pinion. It is identified as Kyosho PNGS0819, featuring 19 teeth with a 0.8M pitch and offered as a direct spare for compatible Inferno builds.
Compatibility mentions in source material include Inferno MP10e and MP10Te and the MP11e within the same category, and the pinion is displayed alongside IF403B and IFW639-58/59/60 spur options where 0.8M gearing applies. Verify motor shaft diameter and bore fitment plus set screw alignment before installation to avoid fit issues.
Choosing a 19T pinion changes final drive gearing toward a balanced compromise between acceleration and top speed for electric RC track use. When fitting a different pinion size check mesh clearance to the spur, torque the hex or set screw properly, and inspect nearby ball bearings for wear to preserve drivetrain reliability.
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