Our premium product is the Gearless Centre Differential transfer case conversion for the Toyota Landcruiser HZJ 75/ 78/ 79 & new VDJ70. This converts the standard part-time transfer case into a full-time four wheel drive, making it the perfect 4WD differential. It functions as an automatic lock-unlock driveline torque balancer to prevent destructive axle wind-up when operating in 4WD continuously on hard surfaces. These forces are caused as the inside and outside wheels travel different distances during tight cornering.