GMC Sierra 3500 Running Boards - Westin - AT6 - Black - '19-'25. 5-inch, textured-black boards for secure footing and an OEM-style profile.

Built from extruded aluminum with a durable black powder coat, AT6 integrates indented step pads for traction, rounded end caps, and bracket covers that conceal hardware. This vehicle-specific kit fits 2019-2025 Sierra 3500 and bolts on with the included hardware—no drilling needed. Lightweight yet sturdy, it resists weather with proper care; in regions with frequent road salt, consider the polished stainless AT6. Typical install is about 1.5 hours. Designed and engineered in San Dimas, California, USA.

Features

• 5-inch wide step area
• Textured black powder-coated aluminum
• Integrated indented step pads for traction
• Vehicle-specific, no-drill bolt-on with hardware

Questions or ready to schedule install? Call us—our Austin, Texas and Los Angeles, California area shops offer professional installation and customization. Call 512-982-9393 (TX) or 562-981-6800 (CA).

Purchasing multiple items? Contact us for shipping discounts.

We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov