Collection: 2007-2014 GMC Sierra 3500HD Bed Extenders

Every bed extender in this collection fits 2007-2014 GMC Sierra 3500HD trucks, both standard and dually beds. Shop hitch-mount options from AMP Research and BedXtender HD Max in silver or black, plus tailgate-mount extenders that add up to 2 feet of usable cargo length.

Do I need to drill my truck bed to install these? No. Hitch-mounted extenders like the AMP Research BedXtender HD slide into your existing 2-inch receiver, and tailgate-mount styles clamp to the gate with no drilling required.

Verified Sierra 3500HD fitment on every listing, no guesswork.