XRay X4 Gear Differential - Set

XR304901 is XRay’s complete X4 Gear Differential Set, featuring an updated composite case and cover with pulley. Precision‑moulded composite gears pair with lightweight aluminium hardcoated outdrives to deliver a lighter, super‑smooth differential.

The case is designed for the X4 platform and includes small bleeding holes for the M2.5x8mm screws to help minimise the risk of stripping when tightening and to allow excess oil to drain during assembly. A revised case shape places the rear belt more centrally to improve consistency and forward traction. The robust sealing system keeps maintenance low — no regular oil changes and excellent resistance to leakage — while the gear diff characteristic boosts on‑power steering. Effective on both carpet and asphalt tracks. Supplied unassembled.

Key Features

• Complete gear differential set for the X4 platform
• Updated composite diff case and cover with integrated pulley
• Precision‑moulded composite gears
• Lightweight aluminium hardcoated outdrives
• Bleeding holes for M2.5x8mm screws help prevent case damage and drain excess oil
• Revised case shape for a more centred rear belt to improve consistency and forward traction
• Low‑maintenance sealing system with excellent resistance to leakage
• Increases on‑power steering on most track types
• Works on carpet and asphalt
• Not factory pre‑assembled

Suggested Compatibility

• XRay X4 platform (suggested compatibility)