See: XRAY

XRAY have introduced a new large volume centre differential set for the XB4’20. The super-smooth and maintenance-free diff design diff includes a composite case and cover with exchangeable spur gear. The gear diff set includes 81T spur gear and a range of various spur gears is available as an option. The internal gears are precision-molded from tough XRAY developed composite material, ensuring long lifespan and super-smooth, efficient operation. The diff design ensures increased traction on slippery tracks and also on bumpy surface where it helps to better absorb the bumps. Larger oil volume prevents the diff from overheating, extending its lifespan.