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

18T machined pulley for NT1 belt systems

This 18-tooth machined pulley is made for use with the XRAY NT1 chassis and functions as a direct replacement or spare for the NT1 belt drive. The design targets routine drivetrain service and setup work where a robust aluminium pulley is preferred to maintain consistent performance.

Fitting is simple on NT1 layouts: remove the existing pulley from the belt path, replace with the new pulley while retaining original spacers and fasteners, then check belt alignment and tension before the first running session. No chassis modification is needed when installed on compatible NT1 assemblies.

In tuning practice this pulley is a component-level service part that helps preserve belt tracking and rotational stability. Many racers keep a machined aluminium spare to restore repeatable behaviour after maintenance without altering gear ratios or motor pinion choices.