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

18T aluminum pulley for precise NT1 setup

This 18T aluminum pulley is a purpose-made replacement for use with the XRAY NT1 chassis and matches the tooth count and form expected for NT1 spur and belt layouts. It is intended as a like-for-like part to keep drivetrain feel and wear predictable.

Compatibility is restricted to the NT1 chassis family referenced by the product title. Confirm the NT1 variant and original pulley dimensions before attempting fitment on other platforms.

Installation is aimed at hobbyists familiar with NT1 layouts. Typical steps include removing the factory pulley, checking shaft and bearing clearance, and refitting with the original retention hardware while ensuring correct alignment and free rotation.

• Confirm shaft diameter and bearing clearance before fitting.
• Apply thread locker to retention screws only if the original assembly uses it.
• Check gear mesh and belt runout after installation to prevent premature wear.

From a tuning perspective, swapping to an aluminum 18T pulley maintains consistent engagement and predictable belt tension behavior during setup changes; consider it a precision replacement rather than a performance upgrade.