I39 Supply - New & Pre-Owned Trailer and Equipment Sales, Financing, Parts, and Service in Portage, WI

View Our Inventory

Inventory changes daily. Please contact us for updates!

Parts & Service

We can take care of everything you need for your current trailer from routine maintenance to custom build outs!

Parts & Service1
Parts & Service
Parts & Service
Parts & Service
Graphics
Graphics
Graphics
Graphics

I39 Graphics

Full service graphics department offering trailer and vehicle wraps, signs, apparel and more.

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EXCELLENT

Based on 552 reviews

Bernard Mkorongo
Bernard Mkorongo

"I was heading from Atlanta, GA to Duluth, MN with a load when my trailer tires snapped off and I was left stranded. I managed to chain the axle and slowly dragged the trailer to a nearby rest area. I spent the entire night trying to figure out how to get it fixed. After calling around and checking different shops, this one stood out. I carefully drove about 10 mph to their location and arrived before they opened. As soon as Joey and Josh came in, they immediately pulled me into the shop, spoke to me with kindness, and took the time to understand exactly what was going on. Shortly after, Nate arrived and got right to work on my truck. Every one of these guys was professional, pleasant, and compassionate. They even invited me inside the warm shop so I didn’t have to sit out in the cold. For lack of a better word, these men were my angels that day. In a moment of real stress and uncertainty, they showed up with skill, integrity, and heart. I am truly grateful for their service and the way they treated me. Highly recommend."
Jeff Geydoshek
Jeff Geydoshek

"I39 is great place to buy at a trailer. See John for a good deal. Kept me updated on the status of my trailer. And they have s large inventory to choose from"
Sharp On Sight
Sharp On Sight

"I bought my trailer from I-39 Supply and also had them do the graphics, and I’m genuinely impressed with how everything turned out. The trailer is solid, the layout works exactly how I need it to, and the graphics look sharp and professional in person. They were good to work with, communicated clearly, and delivered exactly what was discussed. I would not hesitate to work with I-39 Supply again or recommend them to anyone looking for a well-built trailer"
Harley D
Harley D

"Huge shoutout to I39 trailers and graphics. Not only did they help me pick the right trailer they nailed it on the graphics and also got us banners and wrapped our corn hole boards. Very friendly group and are willing to go the extra mile to help you out and get you what you’re looking for. Thanks again we will be back for sure."
Ryan Kilber
Ryan Kilber

"We recently purchased a trailer from i39 Supply and had an amazing experience from start to finish. Alex was our salesman and he was absolutely fantastic to work with. He answered every question we had, always returned our calls, and made the entire process smooth and stress-free. You can really tell he cares about his customers and takes pride in what he does. We never felt pressured and he made sure we were comfortable and informed every step of the way. If you’re looking for great customer service and a company that stands behind their customers, I highly recommend i39 Supply — and definitely ask for Alex!"

Financing Available!

At I39 Supply Trailer Dealership we've partnered with both Sheffield Financial Services and FLCC Financing to make purchasing a new trailer easier for more customers. You can apply online right now!

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Get a Great Trailer for a Great Price

Our convenient Wisconsin location is an easy on/off Interstate 39. Take Exit 85 and continue to Johnson Road. We're just 5 miles south of Portage, WI and we stock over 200 trailers at all times. We can special order trailers with a quick turnaround time and low cost. Our helpful team focuses on quality products, fair prices, and a great customer experience – so call us today!

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