Bolt Hole Spacing Availability for Nerf Bars on a 2020 Chevy Silverado 2500
Updated 12/22/2025 | Published 10/11/2024
Question:
I was curious what is the distance between the bolt holes for the brackets on a 2020 Chevy Crew Cab Westin Pro Trax 4 nerf step bars? Got a set but foe some reasom the brackets arent fitting up on the last hole towards the rear set. The set I ended up with are like 39 inches to center of the bolt ? Is there any place on these step rails that shows what model number they are?
asked by: Amanda C
Expert Reply:
Hey Amanda, I unfortunately don't have the bolt hole spacing for the 2020 Chevy Silverado 2500 nerf bars like the Westin PRO TRAXX # W83KD (or any of the running boards/nerf bars for that matter), and when we reach out to these manufacturers they reply with "they will only fit what we say they will fit" so they don't hand out specs either.
Did you purchase this through us, or through a different company? If you got them through etrailer please let me know your order number or the email address you used at the time of purchase and I can reach out to our customer service team about it.
Product Page this Question was Asked From
Westin PRO TRAXX Oval Nerf Bars - 4" - Black Powder Coated Steel
- Nerf Bars - Running Boards
- Nerf Bars
- Oval
- 4 Inch Wide
- Cab Length
- Powder Coat Finish
- Fixed Step
- Steel
- Black
- Westin
more information >
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Jerred H.
12/22/2025
Hey Amanda, were you able to find the model number on your Westin Pro Traxx 4 nerf bars or get the bolt hole spacing sorted out? Knowing what worked could help others who run into the same fit issue on their Chevy Crew Cab.