Looking for aftermarket parts to modify or upgrade your 2018 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 2018 GMC Sierra 3500 HD in Base to SLT trim we have you covered. We have 5 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 2007-2019 GMC Sierra 3500 HD SLE / SLT 2011-2019 GMC Sierra 3500 HD Denali 2015-2018 GMC Sierra 3500 HD Base $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 2007-2019 GMC Sierra 3500 HD SLE / SLT 2011-2019 GMC Sierra 3500 HD Denali 2015-2019 GMC Sierra 3500 HD Base $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 2007-2019 GMC Sierra 3500 HD SLE / SLT 2011-2019 GMC Sierra 3500 HD Denali 2015-2019 GMC Sierra 3500 HD Base $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 2007-2019 GMC Sierra 3500 HD SLE / SLT 2011-2019 GMC Sierra 3500 HD Denali 2015-2019 GMC Sierra 3500 HD Base $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 2007-2019 GMC Sierra 3500 HD SLE / SLT 2011-2019 GMC Sierra 3500 HD Denali 2015-2019 GMC Sierra 3500 HD Base $329.99 |