XRAY 304903 X4 Gear Differential Set for UNI Bulkheads  [XR-304903]

Advanced Gear Differential for X4

Improve your X4 platform with the XRAY X4 Gear Differential Set, designed to deliver steadier drive characteristics. The kit features a revised composite differential case and a cover with integrated pulley to maintain correct belt alignment. Precision-moulded composite gears together with aluminium hardcoated outdrives create a lighter, smoother operating differential.

Construction and Serviceability

The case includes small bleeding holes for M2.5x8mm screws to reduce the chance of stripping during assembly and to let excess oil run out. The updated case profile ensures the rear belt sits centred, enhancing consistency and forward traction. The effective sealing system makes this gear diff largely maintenance-free and helps avoid oil leaks.

Driving Advantages

Suitable for carpet and tarmac tracks, this differential improves on-power steering response, an important trait for competitive driving. It is not supplied pre-assembled, so correct build and setup are necessary to achieve steady performance without frequent maintenance.