The KM153 middle gear is provided as 1 pcs and designed as an aftermarket replacement for Kyosho motorcycle drivetrains. Positioned between the motor pinion and the spur gear, it transfers drive and resists wear during regular and tuned use.
Fitting guidance: verify gear mesh and axial alignment prior to final assembly, use the original shaft and retaining hardware, and ensure clearance to nearby bearings and the spur gear. Adjust mesh by hand rotation rather than forcing components together.
Service recommendations: keep a light film of gear lubricant on contact faces, inspect bearing seating and endplay periodically, and confirm electronic settings remain consistent after installation. Avoid overtightening screws to prevent stress on the alloy or gearbox casing.
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