 For the 4×4 configuration the rear axle had air suspension.Permanent all-wheel-drive, front twin steer (6×6, 8×8) drive via homo-kinetic drive shafts, lockable differentials, inter-axle differentials with locks and planetary hub reductions were standard for all models.Unlike many six-wheeled vehicles, which have a single front axle and tandem rear axles, 6×6 versions used twin steering front axles- as with the 8×8- and a single rear axle.