2026 Keystone Montana3781RL

The 3781RL is the plan dealers move most. It is a four-slide rear-living Montana with a kitchen island, a floor-to-ceiling pantry, a private front bedroom with a king bed and a conventional rear lounge — the configuration the largest share of Montana buyers choose, which is why dealers stock it deepest and discount it hardest. An outside shower and dual power awnings round out the exterior.

It rides on the full Montana luxury build — the 12-inch I-beam z-frame chassis, the walkable Alpha TPO roof, the Four-Season Living package, hardwood cabinetry, solid-surface counters and the La-Z-Boy furniture package. The 14,290-pound dry weight places it just above the mid plans; the GVWR and payload shown are flagged because the 2026 structured payload was not separately published, so the figures carry the line’s 18,000-pound rating pending plan-specific confirmation. A single 15,000-BTU Coleman Mach heat-pump air conditioner is standard with a triple-15K package optional.

At an MSRP near $139,999 the placard runs high, but as the volume plan it is also the most discounted — street prices near $105,000 are common. It is the Montana for a buyer who wants the most-shopped, easiest-to-resell rear-living layout in the line.

Montana is Keystone's flagship luxury fifth wheel and the best-selling luxury fifth wheel in North America. The line runs to fifteen floorplans for 2026; the six highest-demand layouts are profiled here in full, and the rest — along with the lighter, lower-profile Montana High Country sub-line — are catalogued on the line hub. The 3781RL on this page is highlighted; each other profiled plan links to its own page.