This 26-tooth aluminum pulley is a direct replacement for the XRAY NT1 1/10 on-road chassis and is offered as a hardened, lightweight option that suits the NT1 spur and pinion layout. Its primary role is to influence gear engagement and overall drivetrain feel when fine-tuning the car.
Fitting requires basic workshop steps: remove the original pulley, verify bearing seating and shaft straightness, position the 26T pulley on the shaft while setting correct mesh with the spur gear, then secure the fasteners with care to avoid over-torque. Rotate the assembly to confirm smooth operation and minimal lateral play before a test run.
Used on the setup bench, this pulley functions as a tuning component rather than a one-stop performance upgrade. Altering tooth count or switching to metal affects mesh characteristics, audible feedback and perceived drivability. Use the metal pulley to check for reduced flex or different wear patterns versus stock components, and always confirm compatibility with your NT1 gear stack and bearings.
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