A variable steering rack system in one embodiment includes a pair of stop
rings and a stopper moveable between the rings. The stopper may be
rotatable in one embodiment during translational movement between the
rings by a motor. Preferably, the stopper may stop due to a frictional
engagement between the stopper and the stop rings. Noise may be reduced,
and because the motor may rotate at a high speed, motor performance may
not be degraded under low temperature circumstances.