This replacement spur gear is an aftermarket medium carbon steel part designed to work with the #6780 center differential assembly on compatible 1/10 scale TRAXXAS 4WD models. It serves as the middle-differential large gear, intended for drivetrain service, repairs, or durability-focused upgrades where steel strength is preferred over stock materials.
Fitment and function are specific to the listed TRAXXAS models; install into the center differential carrier following standard differential reassembly practices, verify gear mesh and bearing alignment, and set backlash to the vehicle maker's baseline before running. Use this part when you need a direct replacement spur that matches the #6780 center differential location and material expectation.
3956X
Choose this medium carbon steel spur gear when you need a direct replacement for the #6780 center differential on compatible TRAXXAS 1/10 4WD models; confirm fit and mesh during installation and re-check drivetrain lubrication and bearing condition after service.
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