XB4 gear differential ended up being entirely redesigned both ahead and back and features unique split design of top gear. The differential has greater interior oil volume to boost perseverance about the diff action, yet simultaneously its notably narrower to allow for towards the narrower bulkhead to find the rotating fat closer to the centerline. The maintenance-free super-smooth gear diff includes a composite instance and target with interior satellite gears being precision-molded from unique XRAY-developed graphite composite material, ensuring a protracted lifespan and super-smooth, efficient procedure. Gear differential features redesigned diff-outdrives designed for use with 2.5mm pin.