TracRac Base Rail Kit for Ladder Rack for 2011 GMC Sierra 2500 with a 6.5’ bed

Updated 09/03/2025 | Published 08/30/2025

Question:

I bought a brand new Thule trac rack system from a guy that couldn’t get it to fit with is bed cover. The rails are too short. Which sliding rails do I need for a 2011 GMC sierra 2500 with a 6.5’ bed ?

asked by: Adam

Expert Reply:

Hey Adam, the correct set of TracRac base rails for your 2011 GMC Sierra 2500 6.5 foot bed is the part # TH21501. What are you planning on carrying on the rack?

expert reply by: Jameson C

Adam

9/3/2025

I got It figured out yesterday morning and ordered. unfortunately I think it was on sale Monday for $100 off but it’s ok i needed them and Elijah was very helpful, We plan on carrying a roof top tent and kayaks for fishing. Thanks for the response Adam Mills