XRAY 304901 X4 Gear Differential Set - Low-Friction Race Diff  [XR-304901]

Precision Gear Differential Upgrade for the X4

The XRAY 304901 X4 Gear Differential Set is a carefully engineered upgrade that raises traction and smoothness for competitive runs. The kit includes a reinforced composite differential case and cover plus the pulley for straightforward installation on the X4 platform. Differential gears are injection-moulded from robust composite material and pair with lightweight, hard-coated aluminum outdrives to reduce rotating mass and cut internal friction for crisper power delivery.

Bleeding Hole Design and Belt Centreing

The differential case features dedicated bleeding holes for the M2.5x8mm screws which help prevent case stripping during assembly while allowing surplus oil to escape without compromising the seal. The revised case profile also shifts the rear belt into a more central position, improving belt tracking and forward traction on corner exit.

Minimal Service Requirements

When assembled to correct tolerances, this XRAY X4 Gear Differential runs with minimal upkeep thanks to a dependable sealing approach that keeps fluid contained. Reduced maintenance means more track time and steadier performance between services.

Set Up for Carpet and Asphalt

Designed to perform on both carpet and asphalt, the gear differential enhances on-power steering and handling balance, making it a versatile upgrade for indoor and outdoor racing lines.