This replacement second-stage servo gear suits Kyosho Mini-Z AWD models and is listed as MZA622T. The part uses copper at the second gear position of the servo reduction train where it engages with neighbouring pinions and the spur, delivering a tougher contact surface than common plastic spares.
Installation advice: remove the servo and check the gear stack before fitting, ensure spline alignment and correct mesh with the mating pinion, and re-evaluate endplay after reassembly. Copper components can bed in differently to plastic, so check clearances under light load and rotate the drivetrain by hand to confirm smooth operation.
Setup guidance: install this copper gear for increased wear resistance and steadier tooth contact in frequently used or closely geared Mini-Z AWD setups. Use light micro-gear lubrication and routine servo maintenance to maintain function and longevity.
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