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2026 Keystone RV

2026 Keystone Montana for Sale

We don't sell this from a lot. RVBrokers is a buyer's agent, so we help you find, price, and negotiate this model wherever it is, and line up an inspection before you pay.

Keystone's luxury fifth-wheel flagship — residential living built for full-timing.

Fifth Wheel36' 0" - 43' 11"Sleeps 4 - 8N/A — towable
Find this Montana for sale Call 1-877-801-3190

Build your Keystone Montana

Tell us the floor plan and budget you want. A real person hunts the right one and tells you what it should actually cost. New or used.

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The Montana is the top of the Keystone fifth-wheel range and the model that earns the brand its reputation. It is built for full-time and extended living, with residential-grade cabinetry, large slide rooms, high ceilings, big panoramic windows, and the highest tank and storage capacities Keystone offers. Floor plans span roughly 36 to 44 feet across rear-living, rear-kitchen, mid-bunk, and front-living layouts on heavy tandem-axle frames, most with six-point auto-leveling, a roof-mounted SolarFlex package, and Keystone's Tru-Fit frame design. The companion Montana High Country line offers a slightly lighter, more affordable take on the same recipe. On RV Insider the Montana averages 3.5 stars over about 230 reviews — owners praise the space, comfort, and longevity, with several long-term owners reporting trouble-free use well past a decade. As with any high-volume luxury fifth wheel, components are industry-standard and a careful inspection of the frame, slides, roof, and seals is the smart move on a used unit. It is the Keystone to buy if you want true residential fifth-wheel living and plan to spend serious time in it.

Looking for a Keystone Montana for sale?

You're in the right place. We don't sell the Montana off a lot — we work for you, find the cleanest one on the market new or used, inspect it, and negotiate it. Below is everything you need to know before you shop: the real specs, every floor plan, the photos, what it tends to sell for, and a straight read on what owners love and what they grumble about.

Gallery

Montana — inside & out

Keystone Montana photo 1Click to enlargeKeystone Montana photo 2Click to enlargeKeystone Montana photo 3Click to enlarge
Specs

Montana specifications

Length36' 0" - 43' 11"
Sleeps4 - 8
Bathrooms1 - 2
ChassisN/A — towable
EngineN/A — towable
TransmissionN/A — towable
GeneratorOptional prep; roof SolarFlex solar standard on most plans
StorageFull pass-through basement storage; ~13,000-15,000 lb GVWR, ~2,200-3,000 lb pin weight

Specs reflect the 2026 model year and can vary by floor plan and options.

Floor plans

2 Montana floor plans

Tap any diagram to see the full layout. The floor plan you choose changes the sleeping setup, bath, and storage — it's the single biggest decision on this rig.

Floor plan

3123RL

Triple-slide rear-living layout with island kitchen and front bedroom

Montana 3123RL floor plan diagramClick to enlarge
Floor plan

3531RE

Rear-entertainment layout with theater seating, island kitchen, and front master

Montana 3531RE floor plan diagramClick to enlarge
Owner verdict

What buyers love and what to watch

What buyers love

  • Keystone's true luxury flagship — residential build owners single out for comfort and longevity.
  • Big slides, tall ceilings, and high tank capacity built for living in it full-time.
  • Hugely produced, so clean used examples are plentiful across many years and floor plans.

What to watch

  • Quality control is the brand's soft spot — inspect frame, slides, roof, and seals on any used unit.
  • Heavy: most plans need a capable three-quarter- or one-ton truck to tow safely.
  • Uses the same Lippert/Dometic/Furrion components as the industry, with the usual appliance and slide gremlins.

Notable features

  • Residential cabinetry, large panoramic windows, and high ceilings built for full-timing
  • Roof-mounted SolarFlex solar package standard on most plans
  • Six-point hydraulic auto-leveling on most floor plans
  • Keystone Tru-Fit frame design and high-capacity fresh, gray, and black tanks
  • Companion Montana High Country line offers a lighter, lower-cost version of the same layouts
More from Keystone

Compare other Keystone RV models

See the full Keystone RV lineup ›

Questions

Keystone Montana — buyer FAQs

How much does a Keystone Montana cost?
Typically $40,000-$90,000 used; roughly $90,000-$140,000 new. Price swings hard on year, mileage, slide count, and condition, so treat that as a starting point — tell us the exact rig you're eyeing and we'll get you the real number.
How big is the Montana?
It's 36' 0" - 43' 11" long and sleeps 4 - 8. There are 2 floor plans to choose from.
Should I get a used Montana inspected before I buy?
Yes — every time. Our independent inspectors check the roof, slides, levelers, and chassis before money moves, and our buyer's agents use anything they find to negotiate the price down.
Talk to a human

Ready to find your Montana?

Tell us the floor plan and budget you want. We'll hunt the best one for sale, inspect it, and negotiate it — entirely on your side.

Find a Montana Call 1-877-801-3190