This is an optional XRAY Complete Center Gear Differential, for use with the XB4 2015 only. The XB4 gear diff ensures increased on-power steering for nearly all types of tracks, and is ideal for both carpet and clay tracks.
The super-smooth gear diff includes a composite case and cover with exchangeable spur gear. The gear diff set includes an 81 tooth spur gear with a range of various spur gears also available.
The internal gears are precision-molded from tough XRAY developed composite material, ensuring long lifespan and super-smooth, efficient operation.
The maintenance-free diff design will benefit racers of all levels. When the diff is correctly built, there is no need for maintenance for a very long time… no need for frequent oil changes, and no leakage due to our superior sealing system.