In the North American market, Honda introduced the original SH-AWD system in late 2004 with the second generation 2005 Acura RL. Two other SH-AWD variants were introduced in late 2006 in the then all new 2007 Acura RDX and the new second generation 2007 Acura MDX Sport Utility Vehicles SUV. In late 2008, an improved version of the Acura RL SH-AWD was introduced in the significantly revised Mid-Model Change (MMC) of the 2009 Acura RL. This improved version provided earlier SH-AWD intervention (first gear vs second) and more precise use of the rear differential electromagnetic clutch system.