Undercover Flex 07-13 Silv/Sierra 1500/07-14 2500HD 6'6" w/out CMS w/ Bed Rail Caps FX11009 2019-2021 sierra 1500 so a frame stiffener is

so a frame stiffener is required to strengthen your frame

2001 GMC Sierra 6

bushings can wear out fast

4x137 bolt pattern fits multiple Polaris and Can-Am UTVs

Undercover Flex 07-13 Silv/Sierra 1500/07-14 2500HD 6'6" w/out CMS w/ Bed Rail Caps FX11009 2019-2021 sierra 1500 so a frame stiffener isUnderCover Flex 2007 2013 Chevrolet Silverado 1500 2007 2014 2500 HD 6' 6" Bed Std Ext Crew Cab without Cargo Management System with Bed Rail Caps Black Textured Ultra Low Profile Design Allows For Full Access To Your Bed Built In Prop Rods Secure The Cover Plastic Buckles And Straps Included Rubber Seals And Drain Tubes Channel Water Away Easy Clamp on design and 3 Year Warranty Introducing the next generation of folding covers the UnderCover Flex