Lightweight Rear Axle Assembly XRAY 345101 Compatible with RX Series  [XR-345101]

Rear axle lightweight assembly

This XRAY 345101 lightweight rear solid axle set includes a one-piece axle shaft, a 48T composite rear pulley, and all mounting hardware required for replacement or upgrade on older RX-series cars. The axle profile is machined to cut mass by roughly 25% compared to a standard rear solid axle while preserving a robust build for RC drivetrain use.

Production details note the axle is hand-ground to ensure concentricity and smooth rotation, then heat treated and black coated to increase surface durability. The supplied 48T composite pulley attaches to the axle and comes with the matching fasteners.

Install this axle when renewing worn rear drivetrain parts or when seeking a modest weight reduction at the rear to alter balance and transient response. A basic rear-end teardown and reassembly are needed for fitting; confirm compatibility with your RX-series rear assembly before completing installation.

The XRAY 345101 lightweight rear solid axle is intended as a direct replacement for earlier RX-series models, reducing rotating mass while maintaining accurate axle geometry for routine rear drivetrain upkeep and simple tuning changes.