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

Performance Gear Diff for X4 Chassis

Upgrade your X4 with the XRAY X4 Gear Differential Set, engineered for the X4 platform. The package contains a newly designed composite diff case and a cover complete with pulley to maintain belt tracking. Precision-moulded composite gears paired with aluminium hardcoated outdrives help reduce rotating mass and smooth gear engagement.

Thoughtful Construction

The case includes small bleeding holes sized for M2.5x8mm screws to lower the chance of stripping during assembly while allowing surplus oil to drain away. A reshaped case keeps the rear belt central for steadier operation and improved forward traction. The sealed construction minimises maintenance and prevents oil seepage, meaning less routine attention is needed.

Track-Focused Results

Designed for carpet and asphalt circuits, this gear differential enhances on-power steering behaviour important for lap time consistency. It arrives unassembled; proper assembly is necessary to unlock its full benefits and long-term reliability.