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

18T aluminium pulley tuned for NT1 drivetrains

This 18-tooth aluminium pulley is supplied as a direct replacement for XRAY NT1 chassis drivetrains, matching the tooth profile and material expectations for NT1 spur and belt arrangements. It is not presented as an aftermarket power upgrade but as a precision spare.

Use is limited to the NT1 chassis family referenced in the title. Do not fit this pulley to unrelated chassis without confirming shaft diameter and mounting details.

Installation is straightforward for those used to NT1 layouts: remove the original pulley, check shaft and bearing fit, then secure the replacement with the original fasteners while ensuring correct alignment and free rotation.

• Verify shaft size and bearing clearance prior to fitting.
• Only use thread locking compound if the factory assembly specifies it.
• After installation inspect gear mesh and belt runout to avoid uneven wear.

In setup terms, replacing with an aluminium 18T pulley helps keep gear engagement consistent and belt tension predictable during tuning cycles; treat it as a precision component for reliable behaviour.