With a built-in RES(TM) rail expansion system, UltraGroove(TM)  makes it easy to attach nearly any Thule(R) or Yakima(R) rack for bikes, kayaks, cargo baskets and more. With or without racks, it's incredibly easy to use and it's covered with a weather-resistant, padded ArmorTek deck laminated to rigid aluminum panels. It opens quickly with just a turn of the lock knob and closes just as easily with a pull on the built-in strap.
ULTRAGROOVE
ULTRAGROOVE KIT-02-08-DODGE-RAM/09 RAM 2500/3500-8ft.-LB

Fitment:
Dodge Ram 1500 Laramie 2003
Dodge Ram 1500 Laramie 2004
Dodge Ram 1500 Laramie 2006
Dodge Ram 1500 SLT 2002
Dodge Ram 1500 SLT 2003
Dodge Ram 1500 SLT 2004
Dodge Ram 1500 SLT 2005
Dodge Ram 1500 SLT 2006
Dodge Ram 1500 SLT 2007
Dodge Ram 1500 SLT 2008
Dodge Ram 1500 ST 2002
Dodge Ram 1500 ST 2003
Dodge Ram 1500 ST 2004
Dodge Ram 1500 ST 2005
Dodge Ram 1500 ST 2006
Dodge Ram 1500 ST 2007
Dodge Ram 1500 ST 2008
Dodge Ram 1500 SXT 2008
Dodge Ram 1500 TRX4 2006
Dodge Ram 1500 TRX4 2007
Dodge Ram 2500 Laramie 2009
Dodge Ram 2500 Power Wagon 2009
Dodge Ram 2500 SLT 2009
Dodge Ram 2500 ST 2009
Dodge Ram 2500 SXT 2009
Dodge Ram 3500 Laramie 2009
Dodge Ram 3500 SLT 2009
Dodge Ram 3500 ST 2009
Dodge Ram 3500 SXT 2009