Looking for aftermarket parts to modify or upgrade your 2012 GMC Sierra 3500 HD with bed bars? At Tunersports.com we carry a huge selection of the top name brand performance bed bar parts and accessories for your Sierra 3500 HD.
Whether you have a 2012 GMC Sierra 3500 HD in Denali to WT trim we have you covered. We have 7 bed bars available to mod your Sierra 3500 HD. All parts have free shipping to the Continental US 48 States.
 OUT OF STOCK 74606-01AGMT 900 Bracket Kit... AMP Research 2007-2017 GMC Sierra Bedxtender - Black 2007-2014 GMC Sierra 3500 HD WT 2007-2019 GMC Sierra 3500 HD SLE / SLT 2011-2019 GMC Sierra 3500 HD Denali $72.81 |
 IN STOCK 74805-00AV-shape design is the perfect mix of form and function that keeps your gear secure. Provides the extra clearance needed when used with some tonneau cover rails. Flip it out with the tailgate open to gain up to 2-feet of enclosed cargo area. Flip it inside and close the tailgate to keep tools and sma... AMP Research 2007-2017 Chevrolet Silverado Standard Bed Bedxtender - Silver 2007-2014 GMC Sierra 3500 HD WT 2007-2019 GMC Sierra 3500 HD SLE / SLT 2011-2019 GMC Sierra 3500 HD Denali $329.99 CLEARANCE VIEW PRICE IN CART |
 IN STOCK 74805-01AV-SHAPE DESIGN IS THE PERFECT MIX OF FORM AND FUNCTION THAT KEEPS YOUR GEAR SECURE. Provides the extra clearance needed when used with some tonneau cover rails. Flip it out with the tailgate open to gain up to 2-feet of enclosed cargo area. Flip it inside and close the tailgate to keep tools and sma... AMP Research 2007-2017 Chevrolet Silverado Standard Bed Bedxtender - Black 2007-2014 GMC Sierra 3500 HD WT 2007-2019 GMC Sierra 3500 HD SLE / SLT 2011-2019 GMC Sierra 3500 HD Denali $329.99 |
 IN STOCK 74815-00ACLASSIC U-SHAPE DESIGN FOR MAXIMUM CARGO CAPACITY. Flip it out with the tailgate open to gain up to 2-feet of enclosed cargo area. Flip it inside and close the tailgate to keep tools and smaller cargo contained in the truck bed.... AMP Research 2007-2017 Chevrolet Silverado Standard Bed Bedxtender - Silver 2007-2014 GMC Sierra 3500 HD WT 2007-2019 GMC Sierra 3500 HD SLE / SLT 2011-2019 GMC Sierra 3500 HD Denali $329.99 |
 IN STOCK 74815-01ACLASSIC U-SHAPE DESIGN FOR MAXIMUM CARGO CAPACITY. Flip it out with the tailgate open to gain up to 2-feet of enclosed cargo area. Flip it inside and close the tailgate to keep tools and smaller cargo contained in the truck bed.... AMP Research 2007-2017 Chevrolet Silverado Standard Bed Bedxtender - Black 2007-2014 GMC Sierra 3500 HD WT 2007-2019 GMC Sierra 3500 HD SLE / SLT 2011-2019 GMC Sierra 3500 HD Denali $329.99 |
 IN STOCK - LOW 50-2040Heavy duty 304 polished stainless steel. Flexible mounting system. Accommodates most stake pockets. Easy installation with no drilling required. Accentuates truck appeal. Drill mount hardware is included. Lifetime warranty.... Westin 1999-2013 Chevrolet Silverado (6.5 ft Bed) Platinum Oval Bed Rails - SS 2011-2014 GMC Sierra 3500 HD Denali / SLE / SLT / WT $186.85 |
 SHIPS FROM MANUFACTURER 50-2070Heavy duty 304 polished stainless steel. Flexible mounting system. Accommodates most stake pockets. Easy installation with no drilling required. Accentuates truck appeal. Drill mount hardware is included. Lifetime warranty.... Westin 1999-2013 Chevy/GMC Silv/Sierra (8 ft Bed) (Incl 2014 25/3500HD) Platinum Oval Bed Rails - SS 2007-2014 GMC Sierra 3500 HD SLE / SLT / WT 2011-2014 GMC Sierra 3500 HD Denali $224.04 |