XRAY RX8 Composite 18T Rear Belt Pulley Hard-Coated 7075 by Arrowmax AM-RX8-345838  [AM-RX8-345838]

Aftermarket RX8 rear side belt pulley

The Arrowmax AM-RX8-345838 composite side belt pulley is supplied as a replacement component for the XRAY RX8 chassis. Machined from 7075 aluminium and treated with a hard coating, the part focuses on durability and maintenance practicality over looks. Apertures in the pulley body allow belt debris to escape, helping to limit contamination in the belt track.

In operation the pulley functions as a rear-side belt drive item and is designed to be swapped directly with the RX8 rear pulley it replaces. Thanks to the hard-coated 7075 alloy, it offers improved resistance to surface wear when compared with untreated aluminium pulleys, helping to maintain consistent belt seating through tuning and regular running.

Installation is straightforward for those comfortable with model maintenance: remove the existing rear side pulley, inspect belts and contact surfaces, install the Arrowmax unit in the same location, and confirm belt alignment and tension. No special electronics or drivetrain modifications are required; it fits the RX8 belt route and supports common drivetrain setup work such as tensioning and run-in checks.

The item is provided for RC model use only and is described here as a non-OEM accessory for the RX8 platform.