XB2/XB4 Rear Universal Drive Shaft 77mm - XRAY 325220  [XR-325220]

Rear universal drive shaft for XB2/XB4

The XRAY 325220 universal drive shaft is an RC-scale rear driveline component created as a direct replacement for standard rear drive shafts on XB2 and XB4 platforms. Made from Hudy spring steel and specified at 77mm, the shaft is intended to free the drivetrain and cut down on binding during suspension travel.

In setup terms, the joint geometry allows more compliant movement through bumps and irregular surfaces, helping the chassis keep traction on rough courses and artificial turf. The shaft's finish and geometry also reduce dust build-up around the joint, lowering routine cleaning needs for track sessions with loose grit.

Installation follows the same mounting pattern as the original rear shafts and fits the rear axle assemblies of XB2 and XB4 models, so experienced technicians can swap it in without changing major components. When adjusting handling, check ride height and camber first, then evaluate drivetrain response; a universal shaft often alters transient feel compared with a rigid axle and may call for small damping or anti-roll adjustments.

For XB2 and XB4 racers wanting a direct-replacement rear shaft that reduces drivetrain binding and eases maintenance on dusty tracks, this Hudy spring steel universal shaft is a practical upgrade to test during setup changes.