XRAY RX8 On-Road Rear Solid Axle Pulley 48T - Arrowmax AM-RX8-345148  [AM-RX8-345148]

Rear pulley upgrade for RX8

This Arrowmax AM-RX8-345148 pulley is produced for XRAY RX8 owners looking for a direct replacement or a lightweight upgrade for the rear solid axle pulley. It is CNC machined from 7075 T6 aluminum and finished with a hard coating to improve wear resistance while preserving stock drivetrain geometry.

Key features include 48 teeth, precision CNC cutting, and side drainage holes that eject grit and debris from between the pulley faces and the belt. The hard-coated finish helps the pulley resist belt abrasion and keeps tooth profile consistent under repeated running.

Fitment is simple for those used to RX8 rear-end service: remove the stock rear pulley, check bearings and fasteners, install this Arrowmax AM-RX8-345148 unit, then confirm belt alignment and tension before running. No chassis modification is needed when used as a like-for-like swap.

As a drop-in rear pulley for the RX8 platform, the Arrowmax AM-RX8-345148 balances stiffness and reduced mass, and the drainage holes help maintain reliable belt contact during road and track sessions.