XRAY 345101 Rear Solid Axle Lightweight Set  [XR-345101]

Rear solid axle, lightweight kit

This XRAY 345101 rear solid axle lightweight set provides a one-piece axle shaft assembly, a 48T composite axle pulley, and the necessary hardware for replacement or upgrade on older RX series cars. The axle body is machined to reduce mass by approximately 25% versus the standard rear solid axle shaft while retaining a solid construction intended for RC-scale drivetrain use.

Manufacturing notes from the original parts description indicate the axle is specially hand-ground for concentricity and smooth rotation, then heat treated and black coated to improve surface durability. The 48T rear composite pulley is fitted to the solid axle and supplied with matching hardware for installation.

Use this axle set when replacing worn rear drivetrain components on vintage RX-series kits or when seeking a modest weight reduction at the rear for tuning balance and transient response. Installation requires basic teardown of the rear end and reassembly using the supplied hardware; verify fitment to your specific RX-series rear assembly before final installation.

The XRAY 345101 lightweight rear solid axle is a direct replacement option aimed at older RX-series models, delivering reduced rotating mass and precise axle geometry. It supports rear drivetrain maintenance and straightforward tuning adjustments where a lighter axle section is desired.