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

Upgrade Your X4 with a Precision Gear Diff

The XRAY 304901 X4 Gear Differential Set is built to sharpen traction and control for the X4 platform. The package contains a high-strength composite diff case and cover along with the pulley for correct fitment. Composite-moulded gears work together with light, hard-coated aluminum outdrives to reduce backlash and improve drivetrain response during throttle application.

Smart Venting and Belt Positioning

The case includes bleeding holes designed for the M2.5x8mm screws which reduce the chance of thread stripping when tightening and provide an outlet for extra oil without compromising the main seals. The updated case shape moves the rear belt into a more central line, delivering steadier tracking and improved forward bite exiting corners.

Low Upkeep Design

Once built to spec, this gear differential needs little attention thanks to an effective sealing system that keeps oil in place. That means fewer rebuilds and more consistent lap to lap behaviour.

Built for Carpet and Asphalt Tracks

Specifically suitable for both carpet and asphalt surfaces, the diff improves on-power steering feel and overall balance, making it a practical upgrade for club racers and weekend tuners.