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Go Rhino 69405880SPC RB20 Slim Line Running Boards with Mounting Brackets Kit for GMC Sierra 2500HD/3500 2015-2019

Brand: Go Rhino
Part Number: 69405880SPC
Product Type: Running Boards Kit
Vehicle Fitment: GMC Sierra 2500HD/3500 2015-2019
Condition: New
Note: Installation Type: No drilling required
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Was: $593.05
Sale: $474.44
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Save: $118.61

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The RB20 Slim Line running boards offer the same heavy duty toughness as the original RB Series, but with a slimmer design that fits tighter along the cab for increased ground clearance when off-roading. Constructed from 16-gauge zinc-coated galvanized steel, the Raptor-inspired boards were built to protect your panels from dying debris while providing a full-length step platform. The modern, bullet-stamped design is 5 1/2 inches across at its widest point (compared with 7 1/2 inches of the original RB20) and are offered in cab-length sizes that fit most popular trucks, Jeeps and SUVs. Available with a protective bedliner coating or textured black powder coat finish that carries a 5-year limited warranty.

Kit Includes

  • Running boards
  • Mounting brackets


  • 16-gauge zinc-coated galvanized steel with durable finish for corrosion, impact and abrasion resistance
  • 5 year limited warranty
  • Easy, no-drill installation
  • Heavy duty, Raptor-inspired running boards with slim, low profile design
  • Modern bullet-stamped board that is 5 1/2" across at widest point
  • Fits for 4 door model
  • Slim design sits tighter against cab while providing step surface and increased ground clearance
  • Textured black powder coat finish


  • Product Line: RB Series
  • Style: RB20
  • Color/Finish: Textured Black
  • Material: Galvanized Steel
  • Shape: Rectangle
  • Step Length: Cab Length
  • Fuel Type: Gas
  • Step Width: 5 1/2"

Vehicle Fitment 

Year Make Model Cab Size
2015-2019 GMC Sierra 2500HD Extended Cab
2015-2018 GMC Sierra 3500 Extended Cab

Technical Files 

6940476T_Installation Instructions



Shipping Information

  • Item Requires Shipping
  • 1.0 lbs.
  • W1.0000” x H1.0000” x L1.0000”
  • Free Shipping!
  • Free Shipping!

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