Educational Mini 4WD Gear Set by Tamiya 70269  [70269]

Standard replacement gears for STEM kits

The Tamiya 70269 Universal Gear Set is supplied as a replacement gear pack intended for the STEM Series construction range. The guidance below is written for those familiar with Tamiya construction parts and the basic gear-driven drivetrains used in educational Mini 4WD applications.

Common applications include changing out worn plastic gears in classroom builds, keeping exhibition or display models operational, and supporting iterative prototype work that requires simple, swappable gearing. This item is supplied as a spare part set rather than a performance upgrade for competitive racing chassis.

Assembly notes: verify correct tooth engagement and axial clearance prior to securing assemblies, keep mating shafts aligned to reduce binding, and inspect gears for cracked or deformed teeth. If lubrication is applied, use a small amount of hobby-grade lubricant on contact areas only and remove any excess to avoid debris pickup.

Compatibility guidance: confirm measurements against your construction frame before fitting. The gear set is designed for the STEM Series construction platform and comparable Tamiya educational kits; it is not specified for high-speed racing use on performance Mini 4WD chassis.