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Sales & Service Hours

Customer Service

  • Monday to Friday: 8am - 6pm EST
  • Saturday/Sunday: Closed


  • Monday to Saturday: 8am - midnight EST
  • Sunday: 9am - 10pm EST

Steelcraft STX300 Running Boards 300-02120

Product Information
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Our Price:
Part #:
  • Mounts to rocker panel
  • Sold in pairs


  • Aircraft grade aluminum construction
  • Durable injection molded step pads
  • Corrosion resistant materials
  • Precision custom mounting brackets
  • Sold in pairs
  • Drill free installation

Upgrade your truck with the Steelcraft STX300 Running Boards. The unique style and construction of the STX300 board is guaranteed to get attention. Take advantage of this great product as soon as you receive it with no-drill installation that requires only common hand tools and is shipped with all the necessary hardware.

The STX300 from Steelcraft is constructed from high-grade aluminum for the ultimate in strength and corrosion resistance - but they didn't just stop there. Steelcraft added an extra-wide 4.5" stepping surface that is injection-molded, so you can step up in your truck without slipping in the harshest environments.

Steelcraft knows you want a solid, reliable step that will look great and last longer than your truck. That's why every set of Steelcraft running boards comes with a limited lifetime warranty. Get your STX300 running boards today!

View Available Part Numbers For This Product Line


  • 1999-2006 Chevy Silverado 1500, Extended Cab
  • (2007) Chevy Silverado 1500 Classic, Extended Cab
  • 1999-2006 Chevy Silverado 2500, Extended Cab
  • (2007) Chevy Silverado 2500 Classic, Extended Cab
  • 2001-2006 Chevy Silverado 3500, Extended Cab
  • (2007) Chevy Silverado 3500 Classic, Extended Cab
  • 1999-2006 GMC Sierra 1500, Extended Cab
  • (2007) GMC Sierra 1500 Classic, Extended Cab
  • 1999-2006 GMC Sierra 2500, Extended Cab
  • (2007) GMC Sierra 2500 Classic, Extended Cab
  • 2001-2006 GMC Sierra 3500, Extended Cab
  • (2007) GMC Sierra 3500 Classic, Extended Cab


Aircraft grade aluminum construction-CAD designed aircraft grade aluminum provides ultimate strength and durability. 
Durable injection molded step pads-Precision molded step area ensures that every step lands safe, secure, and even.
4.5” step width-The 4.5” step width is easy to find in low light conditions, and allows for comfortable exit anytime.
No drill installation-These boards mount directly to your vehicle using pre-existing factory mounting locations. Installation requires only simple hand tools.
Limited lifetime warranty-Steelcraft guarantees the STX300 running boards for a lifetime, true quality lasts.
Sold in pairs hardware included-Steelcraft STX300 Running Boards are shipped in pairs and include all of the necessary hardware. 


Watch This Video
Steelcraft STX300 Running Boards Review
Watch This Video
Steelcraft STX300 Running Boards Product Review


Limited Lifetime Warranty

Steelcraft guarantees the original purchaser a LIMITED LIFETIME WARRANTY against manufacturer defects in materials, workmanship, and finish under normal use excluding damage resulting from road hazards, debris, product misuse, and improper installation, impairments from accidents, neglect, shipping, or product modification. This warranty applies only to new products and is limited to the repair or replacement of Steelcraft products.Warranty does not include cost of removal, installation, labor, freight, inconvenience, or consequential damage. Original purchaser must return defective merchandise to the original place of purchase and must provide the original receipt.


Installing the Steelcraft STX300 running boards are very easy to install, with their step by step instruction guild you should have them installed within an hour. If you do have any questions please give our amazing customer service call and they will be more than happy to help you out.

Watch This Video
How to Install Steelcraft STX300 Running Boards on a 2015 Silverado and Sierra