XRAY RX8 Composite Side Belt Pulley 18T Rear by Arrowmax AM-RX8-345838  [AM-RX8-345838]

Composite side belt pulley for RX8

This Arrowmax AM-RX8-345838 composite side belt pulley is an RC-scale replacement part made for the XRAY RX8 chassis. Machined from 7075 aluminium and finished with a hard coating, the design focuses on durability and maintenance practicality rather than cosmetic changes. Side apertures in the pulley body help shed debris generated by belt friction, reducing the likelihood of contamination build-up in the belt path.

Functionally the pulley serves as a direct rear-side belt drive component and is intended as a like-for-like swap with existing RX8 rear pulleys. Because it is made from hard-coated 7075 aluminium, it offers greater surface wear resistance compared with plain aluminium pulleys and is intended to keep belt seating consistent during track sessions and routine tuning.

Installation is straightforward for experienced model technicians: remove the stock rear side pulley, inspect the belt and mating surfaces for wear, fit the Arrowmax pulley onto the same shaft location, and confirm belt alignment and tension. No special electronics or drivetrain modifications are required; it integrates with the RX8 belt route and serves as part of drivetrain tuning practices such as adjusting belt tension and checking run-in behavior.

The part is intended for RC use only and is described here strictly as a model accessory for the RX8 platform.