YZ-4 18T Aluminum Drive Pulley Z4-630A by Yokomo [Z4-630A]

Yokomo Z4-630A 18T F/R/Center Pulley (Hard ano) for YZ-4

Price:

£2.80

Brand:

Yokomo

Model:

Z4-630A

GTIN:

3888

Not Available

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Description
FAQ

High-Strength 18T Pulley for YZ-4 Belts

This 18-tooth hard-anodized aluminum pulley is designed for the Yokomo YZ-4 chassis and offers a firmer contact surface than typical plastic units. It can be used as a replacement in front, center, or rear 18T positions where improved belt engagement is required.

For rear belt routing the pulley must be paired with the rear narrow belt Z4-309-6 to guarantee correct belt seating and alignment. Always verify belt width and routing prior to final assembly to prevent tracking issues and premature wear.

Fitting advice: remove the existing pulley, inspect the shaft and bearings for wear, install the Z4-630A using the original hardware, and recheck belt tension and tracking after a short run. The hard-anodized finish is intended to resist wear from belt contact and maintain consistent engagement.

Remark :

Due to limited stock availability, please notice that some Yokomo items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

Is the Z4-630A suitable for all 18T pulley positions on the YZ-4?

Yes. The Z4-630A is specified for front, center, and rear 18T locations on the YZ-4 where an 18-tooth pulley is required.

What checks should I perform if the belt runs off after fitting?

Confirm you have used the Z4-309-6 narrow rear belt for rear routing, inspect the pulley and shaft for play, and verify belt tension and pulley alignment. Adjust as needed and run briefly to settle the system.