2021 GMC Sierra 3500 Running Boards & Step Bars
Select Your Submodel
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Westin®4" HDX Black Drop StepsGMC Sierra 3500 2021, 4" HDX Textured Black Drop Steps by Westin®, 1 Pair. HDX Drop Steps are heavy duty xtreme truck gear that provide the look, feel and function truck lovers seek. It features wide, die stamped slip resistant step...$569.99 - $1,139.99 - APG®6" H Series Cab Length Running BoardsGMC Sierra 3500 2021, 6" H Series Cab Length Running Boards by APG®, 1 Pair. Material: 6061 Aircraft Aluminum Alloy. Rocker Panel Mount. Hop in and out of your vehicle safely with the help of top-notch APG running boards that provide a...$264.74 - $294.32
- SteelCraft®6.5" STX600 Series Cab Length Black Running BoardsGMC Sierra 3500 2021, 6.5" STX600 Series Cab Length Black Powder Coat Running Boards by SteelCraft®, 1 Pair. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...$294.32
- N-Fab®EpYx Cab Length Black Nerf StepsGMC Sierra 3500 2021, EpYx Cab Length Textured Black Nerf Steps by N-Fab®, 1 Pair. Material: Steel. The EpYx drop down step provides a sleek and aesthetic to your vehicle. The expanded step plate offers the ultimate ease of access to...$404.99$479.99Save 16%
- Aries®3" Cab Length Round Side BarsGMC Sierra 3500 2021, 3" Cab Length Round Side Bars by Aries®, 1 Pair. The Side Bars complement the style of compact and mid-size SUVs, CUVs and trucks. The bars feature custom no-slip step pads for sure footing, making entry and exit...$216.91 - $276.07
- APG®6" ST Drop Style Cab Length Black Rectangular Nerf BarsGMC Sierra 3500 2021, 6" ST Drop Style Cab Length Matte Black Rectangular Nerf Bars by APG®, 1 Pair. Material: 6061 Aircraft Aluminum Alloy. This product is made of high-quality materials to serve you for years to come. Designed using...$205.58 - $264.74
- Westin®6.25" Grate Steps Cab Length Black Running BoardsGMC Sierra 3500 2021, 6.25" Grate Steps Cab Length Textured Black Running Boards by Westin®, 1 Pair. Material: Steel. Westin's Grate Steps Running Boards are engineered to provide maximum traction without sacrificing style. The 6 1/4"...$406.99 - $456.99
- SteelCraft®3" Cab Length Round Side BarsGMC Sierra 3500 2021, 3" Cab Length Round Side Bars with Black Mounting Brackets by SteelCraft®, 1 Pair. The Side Bars complement the style of compact and mid-size SUVs, CUVs and trucks. The bars feature custom no-slip step pads for...$150.86 - $229.25
- Luverne®7" Grip Step™ Black Step BoardsGMC Sierra 3500 2021, 7" Grip Step™ Black Textured Powder Coat Step Boards by Luverne®, 1 Pair. Material: Aluminum. These Luverne aluminum boards are perfect for your work truck applications. They feature advanced step design that...$415.95 - $906.95
- Tyger®3.5" Rider Cab Length Black Oval Side StepsGMC Sierra 3500 Double Cab 2021, 3.5" Rider Cab Length Textured Black Oval Side Steps by Tyger®, 1 Pair. RIDER's distinctive oval tube design enables a wider 3.5" non-slip step pad to achieve greater stability and safety for all...$183.00
- AMP Research®6.25" PowerStep™ Cab Length Black Running BoardsGMC Sierra 3500 Double Cab / Crew Cab 2021, 6.25" PowerStep™ Cab Length Black Textured Powder Coated Running Boards by AMP Research®, 1 Pair. Material: Aluminum. Body Frame Mount. With OBD Connector. High-grade aluminum construction...$1,799.99
- APG®2" Square Tube Black Side ArmorsGMC Sierra 3500 2021, 2" Square Tube Matte Black Side Armors by APG®, 1 Pair. Material: 6061 Aircraft Aluminum Alloy. Rocker Panel Mount. Give your rocker panels the ultimate protection against rocks and debris encountered both on and...Easy access to your truck or SUVProtection for your rig’s side panels$205.58 - $235.16
- APG®6" iStep Running BoardsGMC Sierra 3500 2021, 6" iStep Running Boards by APG®, 1 Pair. Rocker Panel Mount. APG iStep running boards deliver an exceptional appearance to your vehicle. Their innovative patented design, which is inspired by iPhone, provides both...$176.00 - $338.69
- Raptor Series®6" OEM Cab Length Running BoardsGMC Sierra 3500 2021, 6" OEM Cab Length Running Boards by Raptor Series®, 1 Pair. Material: Aluminum. These boards are designed to bolt to the factory mounting points, providing an easy, no-drill installation. This new step offers a...$419.99 - $464.99
- Luverne®6.5" MegaStep™ Black with Polished Trim Running BoardsGMC Sierra 3500 2021, 6.5" MegaStep™ Black with Polished Trim Running Boards by Luverne®, 1 Pair. Material: Aluminum Core and Stainless Steel Trim. MegaStep™ 6-1/2" running boards are the ultimate combination of side accessories,...$686.95 - $956.95
- APG®5" iStep Running BoardsGMC Sierra 3500 2021, 5" iStep Running Boards by APG®, 1 Pair. APG iStep running boards deliver an exceptional appearance to your vehicle. Their innovative patented design, which is inspired by iPhone, provides both a unique look and...$161.21 - $294.32
- APG®6" S Series OE Style Cab Length Running BoardsGMC Sierra 3500 2021, 6" S Series OE Style Cab Length Running Boards by APG®, 1 Pair. Rocker Panel Mount. Want to give your machine the look of a high-end trim level? Then these APG S Series OE Style running boards are for you....$295.80 - $443.70
- SteelCraft®6" STX500 Series Cab Length Rectangular Running BoardsGMC Sierra 3500 2021, 6" STX500 Series Cab Length Rectangular Running Boards by SteelCraft®, 1 Pair. Rocker Panel Mount. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...$244.04 - $354.96
- SteelCraft®5" Premium Cab Length Oval Side BarsGMC Sierra 3500 2021, 5" Premium Cab Length Oval Side Bars by SteelCraft®, 1 Pair. Rocker Panel Mount. The Oval Premium Side Steps are mounted on sturdy cradle mounting brackets for true convenience and stability that match the strength...$298.76 - $391.94
- Westin®6.5" Thrasher Series Cab Length Black Running BoardsGMC Sierra 3500 2021, 6.5" Thrasher Series Cab Length Textured Black Running Boards by Westin®, 1 Pair. Material: Mild Steel. Length: 86". Westin Thrasher Boards feature a rugged 1-piece stamped steel construction and indented louvers...$479.51 - $499.21
- Raptor Series®Magnum™ RT Series Cab Length Black Side StepsGMC Sierra 3500 2021, Magnum™ RT Series Cab Length Black Powder Coat Side Steps by Raptor Series®, 1 Pair. Material: Steel. Magnum RT Steps are the newest and unique Truck Side Step Bars. The RT Side Step Bar features a sharp...$410.99
- Aries®3.3" ActionTrac™ Retractable Cab Length Black Running BoardsGMC Sierra 3500 Crew Cab 2021, 3.3" ActionTrac™ Retractable Cab Length Textured Black Running Boards by Aries®, 1 Pair. With integrated LED lights that illuminate the power side steps upon opening. Material: Aluminum. Length: 87.6"....$1,749.95
- APG®RS Drop Style Cab Length Black Rectangular Nerf BarsGMC Sierra 3500 2021, RS Drop Style Cab Length Matte Black Rectangular Nerf Bars by APG®, 1 Pair. Material: 6061 Aircraft Aluminum Alloy. This product is made of high-quality materials to serve you for years to come. Designed using...$442.22
- SteelCraft®4" Cab Length Oval Straight Side BarsGMC Sierra 3500 2021, 4" Cab Length Oval Straight Side Bars by SteelCraft®, 1 Pair. SteelCraft’s all-new 4" bar is taking the aftermarket world by storm. With sleek bends and rugged, aggressive step pads, these side bars will take...$232.20 - $323.90
- Ranch Hand®3" Black Round Nerf Step BarsGMC Sierra 3500 Crew Cab 2021, 3" Black Powder Coat Round Nerf Step Bars by Ranch Hand®, 1 Pair. Ranch Hand Running Steps offer the same strength and resilience as Ranch Hand’s front and back protection. Their running steps are built...$734.35 - $863.95
- Westin®7" R7™ Series Cab Length Running BoardsGMC Sierra 3500 2021, 7" R7™ Series Cab Length Running Boards by Westin®, 1 Pair. Westin R7 Boards feature oversized step pads and OE style traction grooves. R7 Boards are sold in complete kits that include: driver and passenger-side...$429.11 - $599.19
- APG®6.5" T Series Cab Length Black Running BoardsGMC Sierra 3500 2021, 6.5" T Series Cab Length Black Powder Coated Running Boards by APG®, 1 Pair. Material: Carbon Steel with PE Step Area. Rocker Panel Mount. Want to get safe and easy access to your vehicle without adding much weight...$303.20
- N-Fab®3" Black Round Nerf StepsGMC Sierra 3500 2021, 3" Black Round Nerf Steps by N-Fab®, 1 Pair. Nerf Bars have a patented N-FAB hoop step design featuring a 3" main tube diameter, .084 wall steel tubing. The patented drop-down step design and location is engineered...$454.99 - $574.99$529.99 - $649.99Save up to 14%
- APG®DS Drop Down Style Cab Length Black Trapezoid Nerf BarsGMC Sierra 3500 2021, DS Drop Down Style Cab Length Matte Black Trapezoid Nerf Bars by APG®, 1 Pair. Material: Carbon Steel. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...$442.22
- Westin®4" Outlaw Series Cab Length Black Round Drop Nerf Step BarsGMC Sierra 3500 2021, 4" Outlaw Series Cab Length Textured Black Round Drop Nerf Step Bars by Westin®, 1 Pair. The all-new Outlaw Drop Nerf Step Bars from Westin are an affordable and stylish addition to any truck. These steps are...$459.99
