This is an aftermarket steel large bevel gear sold as 2pcs, designed for use with Tamiya TT02 and TT02B chassis as an RC-scale drivetrain component. The part replaces the original bevel gear in the TT02 family where a steel option is preferred for increased wear resistance.
In a typical TT02 gearbox the large bevel gear transfers power from the pinion and spur arrangements to the differential and wheels; swapping to steel affects durability and the feel of the drivetrain. When fitting the gear, follow standard TT02 disassembly procedures, confirm correct mesh with the pinion gear, inspect surrounding bearings and mating parts, and apply appropriate diff and gear lubrication before testing.
Use this gear as a maintenance replacement or for modest durability upgrades, keeping in mind steel-to-plastic interfaces may accelerate wear on adjacent components if existing bearings or pinion/spur alignment are compromised.
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