This Arrowmax 1st gear pinion is supplied as an aftermarket replacement for the XRAY NT1 clutch assembly. Manufactured from 7075-T6 aluminium with a hard coating, it is intended to directly replace the NT1 1st gear pinion and mesh cleanly with standard NT1 spur gears.
Available sizes span typical tuning increments: 16T, 17T, 18T, 19T, 20T, 21T, 22T and 23T. These options let you alter gearing ratios to favour quicker acceleration or increased top speed depending on the circuit.
Installation advice: designed for the NT1 clutch form, so verify shaft diameter and clutch fit prior to installation. Set correct mesh and test clutch engagement across throttle inputs to reduce the chance of premature wear.
Tuning purpose: swapping the 1st pinion is a straightforward mechanical tweak to match track demands or motor behaviour. When paired with NT1 spur gears these pinions change gearing only and do not require changes to motor or ESC settings.
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