Parts we Stock and Install:

Proud Supplier of Curt Products!

  • Curt Trailer hitches
  • Curt Ball Mounts
  • Curt Towing accessories
  • Curt Brake controllers
  • Curt Towing Accessories
  • Curt Trailer parts and Accessories
  • Curt Weight Distribution Hitches
  • Wheel and Tire assemblies in multiple sizes/Spare Mounts
  • Tongue Jacks
  • Weigh Safe Adjustable Hitches
  • Winches/Winch Plates
  • Lights and Electrical / Interior and Exterior LED Lighting
  • Roof Vents and Windows
  • Body Components/Fenders/RV Latches
  • Trailer Locks
  • Motorcycle / Wheel Chucks
  • E-Track & Accessories/ D-Rings
  • Helmet Cabinets
  • Ladder Racks/Tongue Mounted Ladders
  • UWS Toolboxes
  • Tie down options/Ratchet Straps / Chains and Binders
  • Ramp Flaps

Our Lineup of 250+ Trailers

Dump TrailersView
Snowmobile TrailersView
Enclosed TrailersView
Utility TrailersView
Equipment TrailersView



Come See Us Just North of Madison!

I39 Supply trailer sales, rental and trailer repair is in central Wisconsin. Our convenient location is near Cascade Mountain on Interstate 39. Exit 85.  We stock over 250 trailers at all times. Our trailer purchasing power provides value to customers because we can special order trailers with a quick turnaround time and low cost. Our helpful team can’t be beat so call us today! Call us at (608) 742-6223

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Closed 9/1/21 Thru 9/6/21

Our Dealership Will Be Closed From 9/1/21 Thru 9/6/21 To Attend The NATDA National Trailer Show & Celebrate Labor Day. We Will Be Back To Normal Hours On 9/7/21. Thank You For Your Interest & We Look Forward To Returning Your Call or Email!

-I39 Supply Sales, Service, & Graphics

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