XRAY NT1 18T Aluminium Pulley XN1-40/RE by 3Racing  [XN1-40/RE]

18T aluminium pulley tuned for NT1 precision

This 18-tooth aluminium pulley is intended as a direct replacement for XRAY NT1 chassis drivetrains, providing the correct tooth profile and material to match NT1 spur and belt arrangements. It is offered as a precision spare rather than a modification to drive ratios.

Use is confined to the NT1 chassis family named in the title; confirm your variant and original pulley measurements before attempting to fit this part on other models.

Installation follows standard NT1 maintenance procedures: remove the original pulley, confirm shaft and bearing clearances, and fit the replacement using the original retaining hardware. Check alignment and rotational freedom before powering the motor.

• Confirm shaft diameter and bearing clearance prior to installation.
• Apply thread locker only if originally specified on the factory assembly.
• Inspect gear mesh and belt runout after fitting to avoid premature wear.

In practical tuning terms, fitting an aluminium 18T pulley helps keep gear engagement consistent and belt tension behaviour predictable during setup changes; treat it as a precision replacement component.