Will Reese Hitch Box Extension and Reducer for Titan 2-1/2" Trailer Hitches Fit 2021 GMC Sierra 3500
Updated 03/04/2026 | Published 02/28/2026
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Question:
Will product RP45292 fit a stock 2 1/2” x 2 1/2” hitch on a 2021 GMC Seirra 3500?
asked by: Scott W
0
Expert Reply:
Hey Scott! Yes, the Hitch Box Extension and Reducer for Titan 2-1/2" Trailer Hitches # RP45292 will fit the factory 2-1/2" receiver on your 2021 GMC Sierra 3500. You may also need a 7-way extension like the 24" # TLW6024 or 42" # TLW6042.
Is this for an in-bed camper setup or something else?
expert reply by:
Robin H
0
Hitch Box Extension and Reducer
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Dave
3/4/2026
Scott I have been using the hitch extension for over three years and it is strong and will support a heavy load if needed. I use it for towing my boat into Canada on some very rough roads of ups and downs and sometimes 4 wheel drive it was a good purchase for me