Our first year with a fiver. The 2005 Sierra 3500 SLT Duramax CC/LB/Dualie with a Mountain Master 22K air hitch pulls like a champ. You know the trailer is there, but not by much.
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2013 Montana 3750FL
2005 GMC 3500 Duramax CC/LB/Dualie AFE Intake
Mountain Master 22K
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