This 26-tooth aluminium pulley is supplied as a direct replacement for the XRAY NT1 1/10 on-road chassis and is intended as a competition-oriented tuning component. Machined to provide consistent tooth geometry and reduced compliance, it interfaces with the NT1 spur and pinion to give precise feedback for setup decisions.
Installation follows a workshop-standard routine: remove the stock unit, inspect bearing bores and shaft runout, fit the 26T pulley ensuring exact mesh alignment with the spur gear, then torque fasteners to the recommended level while avoiding distortion. Confirm smooth rotation and minimal lateral play before track testing.
In tuning sessions this pulley is a diagnostic and setup tool rather than a single-item upgrade. Altering tooth count or material will change mesh dynamics, vibration signature and wear trends. Use this aluminium pulley to evaluate stiffness, mesh repeatability and component longevity compared with stock parts, and always verify dimensional compatibility with NT1 gears and bearings.