??? Defenders are permanent 4x4, and can be used on asphalt. There is no 2WD option for a Defender. I think the Series 3 Land Rover had selectable 2WD/4WD though.That's only sort of accurate though. Yes, it does have 2 speeds, but only in 4WD, and the Defender 4WD system can not be used on asphalt as it doesn't have a central differential. In 2WD its only 1 speed. The only reason to connect it directly to the transfer case is to lose the gearbox.