Extang 99-16 Ford Super Duty Short Bed (6 1/2 ft) Trifecta ALXThe easiest truck bed cover just got easier. The Trifecta ALX packs the same great features as Extang?? s best selling tri fold cover, the Trifecta 2. 0, but with a Secure Rotary Release Latching System at the tailgate and an automatic latching feature that?? ll make getting the goods in and out of your truck bed that much faster. This Part Fits: Year Make Model Submodel 2009 2010 Ford F 250 Super Duty Cabela's 2008 2009 Ford F 250 Super Duty FX4 2004