Direct replacement for the CW4462 standup transmission case. Used for higher bite situations to move the motor forward. Uses CW4464 top shaft and CW 2.6 Diffs. CW4494 Comes with laydown case, 39T idler gear and laydown carbon fiber motor plate. Uses same diff and top shaft as CW4462 standup case. Will fit any of the gear box CW Gen7 Foam cars, or CW Gen4 rubber tire car and newer.