Looking for a meticulously maintained, top-tier off-road machine at an incredible price? At Highmark Rentals, we refresh our premium rental inventory annually. Every September, we sell our entire fleet of Polaris RZR and Can-Am Defender UTVs, offering you the ultimate opportunity to own a current year, dealer-serviced side-by-side with complete history transparency.
Centrally located at 633 Madison Ave, West Yellowstone, MT, we welcome buyers from across Montana, Wyoming, Idaho, Utah and everywhere in between to browse our available inventory.
Buying a used rental side-by-side can often feel stressful, but we choose to do things differently. We treat our buyers like family and back every single fleet sale with our strict shop integrity standards:

We have current year UTV / ATV models available every September after our summer trail season winds down. And we feature the industry's two leading off-road brands. Polaris and Can-Am.
If the specific UTV you want is no longer available, get your name on our list for September 2027!
Contact us today to put your name on our exclusive priority list for the end of the summer season in September 2027 - when we release our next lineup of professionally serviced used Polaris and CanAm side-by-sides for sale! View our 2027 fleet to see what we'll have available in September.

The industry standard for high-performance trail riding. Featuring advanced suspension tracking, incredible agility, and responsive power handling. Perfect for those wanting an exhilarating trail machine for riding all the 50-inch width-restricted trails.

The premier choice for families, property owners, and backcountry hunters. Featuring exceptional heavy-duty cargo capacities, a flexible 4 or 6-passenger front/back seat configuration, incredible stability and smooth riding on rugged terrain.
If the side-by-side you want is no longer available, get your name on our list for September 2027! View our 2027 Fleet to see what we'll have available in September.
Contact us today to put your name on our exclusive priority list for the end of the summer season in September 2027 - when we release our next lineup of professionally serviced used Polaris and Can-Am UTVs!
Call / Text (406) 646-7855 or send us an Email today!
Check out our active listings online or stop by our shop at 633 Madison Ave to view the machines in person.
Our certified mechanics will walk you through the machine's maintenance log and inspection results.
Looking for year-round fun? Ask if we have any of our winter snowmobile fleet still left from this past winter to lock in your outdoor adventures for every Montana season!
Unlike buying from a private party where the vehicle's history is a mystery, our machines are looked after by factory-certified technicians after every single ride. Plus, you get a current year, professionally maintained vehicle at a steep discount compared to brand-new dealership prices.
While many people use the term "ATV" interchangeably, our sales fleet consists exclusively of modern, steering-wheel UTVs (Utility Task Vehicles) or Side-by-Sides. These models offer significantly better safety frames, seatbelts, protective roofs, and passenger capacities.
We carry the industry's top two performance brands: Polaris RZR Trail Ultimate (2-Seater) and Can-Am Defender MAX HD11 (4 to 6 Seater).
Yes! If you know you want to purchase one of our side-by-sides, you can pay a deposit to guarantee your name is on one. If you've paid a deposit, you'll get the first pick of vehicles.
Yes! We keep a list of names throughout the summer of everyone who's interested purchasing one of our high-quality, used side-by-sides. Then in early August we begin calling everyone on that list to discuss the details about each UTV available and their prices. Names are called starting at the top of the list, and those who have paid deposits are called first.
Absolutely. Integrity is our core value. We provide a full printout of the machine's service history, oil changes, and inspections conducted by our on-site mechanical shop.
Please call or text us at (406) 646-7855 or send an email through our Contact page if you still have questions or would like to put your name on a machine.
Our current-season vehicles sell quickly every September. Contact us today or visit our West Yellowstone location to pick out your machine!



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