Looking for aftermarket parts to modify or upgrade your 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 2007 or 2024 GMC Sierra 3500 HD in AT4 to WT trim we have you covered. We have 13 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 2015-2018 GMC Sierra 3500 HD Base $72.81 |
 IN STOCK 74612-01AGMT 900 Bracket Kit... AMP Research 19-22 Chevrolet/GMC Silverado/Sierra 1500 Bedxtender HD Kit - Black 2019-2021 GMC Sierra 3500 HD Base 2019-2024 GMC Sierra 3500 HD Denali / SLE / SLT 2020-2024 GMC Sierra 3500 HD AT4 2022-2024 GMC Sierra 3500 HD Pro 2024-2024 GMC Sierra 3500 HD Denali Ultimate $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 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 2007-2014 GMC Sierra 3500 HD WT 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 2007-2014 GMC Sierra 3500 HD WT 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 2007-2014 GMC Sierra 3500 HD WT 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 77254-01AThe AMP Research POWERSTEPXL automatic electric-powered running board is designed for lifted trucks. The board has been integrated into a custom rocker rail and creates a seamless look while providing a 3 in. lower stepping surface than the original POWERSTEP. This allows easier access to and from t... AMP Research 20-23 Chevy Silverado 1500 Crew Cab PowerStep XL - Black (Incl OEM Style Illumination) 2020-2021 GMC Sierra 3500 HD Base 2020-2023 GMC Sierra 3500 HD AT4 / Denali / SLE / SLT 2022-2023 GMC Sierra 3500 HD Pro $2,299.99 |
 IN STOCK 74841-00AFlip 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. Classic U-shape design provides maximum cargo capacity.... AMP Research 20-23 Chevrolet/GMC Silverado/Sierra 1500 (No Mltipro Tailgt) Bedxtender HD Max - Silvr 2019-2021 GMC Sierra 3500 HD Base 2019-2024 GMC Sierra 3500 HD Denali / SLE / SLT 2020-2024 GMC Sierra 3500 HD AT4 2022-2024 GMC Sierra 3500 HD Pro 2024-2024 GMC Sierra 3500 HD Denali Ultimate $329.99 |
 IN STOCK 74841-01AFlip 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. Classic U-shape design provides maximum cargo capacity.... AMP Research 20-23 Chevrolet/GMC Silverado/Sierra 1500 (No Multipro Tailgt) Bedxtender HD Max - Blk 2019-2021 GMC Sierra 3500 HD Base 2019-2023 GMC Sierra 3500 HD Denali / SLE / SLT 2020-2023 GMC Sierra 3500 HD AT4 2022-2023 GMC Sierra 3500 HD Pro $329.99 |
 IN STOCK 74831-00AV-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 19-22 Chevrolet/GMC Silverado/Sierra 1500 (No Mltipro Tailgt) Bedxtender HD Sport - Sil 2019-2021 GMC Sierra 3500 HD Base 2019-2024 GMC Sierra 3500 HD Denali / SLE / SLT 2020-2024 GMC Sierra 3500 HD AT4 2022-2024 GMC Sierra 3500 HD Pro 2024-2024 GMC Sierra 3500 HD Denali Ultimate $329.99 |
 IN STOCK 74831-01AV-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 20-23 Chevrolet/GMC Silverado/Sierra 1500 (No Mltipro Tailgt) Bedxtender HD Sport - Blk 2019-2021 GMC Sierra 3500 HD Base 2019-2023 GMC Sierra 3500 HD Denali / SLE / SLT 2020-2023 GMC Sierra 3500 HD AT4 2022-2023 GMC Sierra 3500 HD Pro $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 |