This is a 16-tooth first gear pinion manufactured for XRAY NT1 applications and sold under Arrowmax part AM-NT1-338516. Built from 7075-T6 aluminium with a hard-coated finish, the part is intended as a lightweight replacement pinion to maintain precise engagement with the spur gear and to support gearing adjustments on track.
Fitment and tuning role are straightforward: the gear serves as a direct replacement on NT1 clutch/pinion assemblies where a 16T option is required. Use it when you want a small step change in final drive for handling or acceleration tuning; pairing tooth counts with the vehicle spur gear alters overall ratio without modifying the gearbox layout.
Installation notes: verify correct pinion-to-spur mesh before full assembly, ensure the set-screw seats on the motor pin without cross-threading, and check for burrs or rough edges after mounting. The hard-coated 7075 core focuses on wear resistance and consistent tooth profile rather than altering motor or ESC behaviour.
Available tooth counts in the same Arrowmax NT1 pinion range include 16T, 17T, 18T, 19T, 20T, 21T, 22T and 23T, letting drivers select fine steps for ratio tuning while retaining the same material and finish across sizes.
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