This spur gear is supplied for DP48 drive systems and is identified by Yokomo as model YOKSG-A4886 with an 86-tooth count. It functions as the larger spur gear in compatible DP48 geartrains on 1/10 on-road models where gear selection influences overall drivetrain behavior.
Compatibility and fit: the DP48 reference in the product name denotes the expected gearbox type and pinion interface. Always verify centre height clearance and shaft tolerances on your chassis to ensure the spur meshes correctly with your chosen pinion.
Installation notes: install the spur into the differential or carrier following the chassis manual, set a sensible initial mesh, then make fine adjustments with shims or motor position to avoid binding. Tighten set screws with the correct hex bit and double-check mesh after the first session.
Tuning role: fitting an 86T spur raises the driven tooth count and shifts gearing toward improved acceleration and torque at the cost of some top speed. Use this gear to tune performance to track conditions and motor selection while confirming pinion compatibility.
Maintenance: inspect teeth for uneven wear or burrs, clean any lodged debris after runs, and ensure bearings and diff internals rotate freely to extend the life of the spur gear assembly.
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