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Westin ProTraxx 4 In. Oval Step Bar - Black Powdercoat - For Double Cab - Extended Cab

Part #:
21-23715
SKU:
WS-21-23715
Availability:
Fargo - Check Stock – Call or Chat
Sioux Falls - Check Stock – Call or Chat
Westin *Add’l Fee May Apply - Check Stock – Call or Chat
UPC: 00707742056202

Additional details

  • 4" oval tube
  • Bold step pad design that is UV resistant
  • Seamless, domed ends for a finished look
  • 30° OE style bends on each end
  • No drill installation
  • Includes a pair of bars and mounting kit and hardware
  • Black powder coat finish
  • 3 year warranty

Westin Pro Traxx 4 nerf step bars feature a 4 in wide oval tube with a heavy-duty step pad that provides a wide and secure stepping surface. These bars feature 30 degree bend at each end and have seamless domed ends so there are no end-caps or exposed bolt heads. The bars are available in 2 finishes, a polished stainless steel or black powder coated steel.

Key Features

  • Robust construction: industrial-grade steel tube with heavy-duty polymer step pads that resist UV, abrasion, and impact

  • Aesthetic and functional: smooth integration with OE styling thanks to seamless domed ends and factory-style bends 

  • Protection: helps shield rocker panels from debris and damage 

  • Bolt-on installation: vehicle-specific brackets, mounting hardware included; typically requires no drilling

Why Choose ProTraxx 4?

  • Blend of style and functionality—enhances your vehicle’s appearance while improving accessibility and protecting rocker panels.

  • Versatile material options—choose polished stainless for maximum durability and style, or black powder-coated steel for a sleek, budget-friendly look.

  • Hassle‑free install—bolt-on design with custom-fit kit makes it accessible for DIY or professional install

Ideal Use For

  • Trucks, SUVs, and Jeeps where improved cab entry is desired—especially for lifted or higher vehicles

  • Owners looking for combination of protection and accessibility, while maintaining a clean, OE-quality look.

  • Those wanting a durable option—stainless steel for long-lasting style, or black powder coat for cost-effective performance.

Care & Maintenance

  • Regular waxing is recommended (avoid wax or polish with abrasives) 

  • Stainless steel models: clean with mild soap and water; use stainless steel polish to buff out minor scratches

Warranty

  • Polished stainless steel versions come with a lifetime warranty against defects in materials, workmanship, or finish under normal use. Excludes damage from road hazards, misuse, improper installation, etc.

  • Black powder-coated versions have a 3-year warranty under similar terms

  • Warranty covers repair or replacement of the product only—does not cover labor, shipping, or related costs. Proof of purchase and returning the defective item are required

BrandWestin
Length77.17 inch(es)
Width14.76 inch(es)
Height5.51 inch(es)
Weight54 lb(s)
UPC00707742056202

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  • 2017 Chevrolet Silverado 1500
  • 2017 Chevrolet Silverado 2500 HD
  • 2017 Chevrolet Silverado 3500 HD
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  • 2015 Chevrolet Silverado 1500
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  • 2016 GMC Sierra 1500
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WARNING: Some products may contain chemicals such as DEHP, which can cause cancer, birth defects or other reproductive harm. For more info go to www.p65warnings.ca.gov