XRAY 323353-M Medium Composite Rear Upright - Precision Tuning Part  [XR-323353-M]

Rear Upright Optimised for Chassis Control

The XRAY 323353-M Composite Rear Upright is crafted from a medium-hardness composite to strike a balance between toughness and measured flex. Supplied for left and right sides, it includes seven selectable upper roll centre positions so you can tailor handling to different track surfaces.

Design Elements for Consistent Handling

Built with a 0 degree toe configuration this upright maintains consistent rear geometry under load, and the set-screw location locks the pivot pin in place to limit unwanted movement during heavy use.

Best Use Cases and Bearing Choices

Well suited to very-low through low-traction tracks, the medium composite helps manage grip without being too stiff. The outer position accepts larger 5x12mm bearings to withstand heavier loads while inner 5x10mm bearings reduce unsprung mass for livelier response.