2026 Keystone Montana3761FL

The 3761FL inverts the usual fifth-wheel layout. Instead of a rear living room, the lounge moves to the front, up in the raised section over the pin, where five slide-outs open an expansive entertaining space with opposing sofas and theater seating. Behind it sit a full central kitchen, a private bedroom, and — the plan’s signature — a bath-and-a-half, with a second half bath that is the feature full-timers and entertainers most often want.

Five slides is the most of any profiled Montana, and the layout is built for living rather than berth count. It carries the standard luxury build — 12-inch I-beam z-frame chassis, Alpha TPO walkable roof, the Four-Season package, the La-Z-Boy furniture package and an 18-cubic-foot residential refrigerator on a 2,000-watt inverter — with a king bed, a 50-inch living-room TV and a single 15,000-BTU Coleman Mach heat-pump air conditioner standard. RVUSA lists a 2,880-pound dry pin and a 3,049-pound payload against the line’s 18,000-pound GVWR.

At an MSRP of $130,433 it sits in the heart of the luxury range. For a couple or a pair of couples who want the biggest, brightest living space in the lineup and a second bath — and who tow with a properly rated three-quarter-ton or one-ton truck — the front-living 3761FL is the entertainer’s Montana.

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 3761FL on this page is highlighted; each other profiled plan links to its own page.

This floorplan carries its water comfortably. A full 70-gallon fresh tank is roughly 19% of the 3,049-pound cargo capacity, leaving the 3761FL with a usable gear budget even when you tow full.

The published dry pin weight of 2,880 pounds is 19% of this floorplan’s 14,951-pound dry weight. Fifth-wheel pin weight rides in the bed of the truck, so it comes off payload rather than off tow rating — and it rises with the trailer as you load it, not in proportion to what you put over the axles.

Nothing above changes the ceiling. Loaded to its 18,000-pound GVWR the 3761FL is towing 3,049 pounds more than its 14,951-pound dry figure, and that is the number your vehicle has to be rated for — not the brochure weight.

Tank balance is generous here: 70 gallons of fresh against 88 grey and 88 black, so waste capacity keeps pace with supply and the fresh tank is the constraint that ends a dry stay.

Ranked by GVWR, the 3761FL sits 7 of 13 in the Montana line: 18,000 pounds against a line that runs from 16,480 to 18,000 pounds. That position is the useful thing to know, because the plans immediately either side of it are the real alternatives.

Either side of it in the same line: Montana 3100RL matches it exactly at 18,000 lb GVWR; and Montana 3781RL matches it exactly at 18,000 lb GVWR.

7 other Montana plans share this floorplan’s 18,000 lb GVWR, so the ranking above separates plans that tow to the same ceiling. On a shared chassis the figure that actually differs between them is cargo capacity and where the weight sits, not the rating.

Against the 3761FL: the Cedar Creek 381MUD is 2 ft longer and sleeps 2 more; the Influence 3003RL is 6 ft shorter and sleeps 2 fewer; the Paradigm 375RD sleeps 1 fewer. Those are differences in the published numbers only — what they cost, how they are built and how they live are separate questions each of those pages answers on its own terms.

Those are the nearest fifth wheels from other lines by weight — one per line, picked by proximity on that figure and nothing else. They are listed so the same tow vehicle can be checked against real alternatives, not because they are equivalent inside; layout, build and price diverge sharply across that group.

For scale, the Montana floorplans profiled here run 12,881 to 15,644 pounds dry and 35 to 43 feet of exterior length across 13 plans. Where a floorplan falls in that spread usually says more about which vehicle can tow it, and which site it fits, than the layout name does.

Every profiled floorplan in this line, with the full weight table, is on the Montana line hub.

This catalog tracks 18 specification fields per floorplan. Named sources publish 16 of them for the 3761FL. The rest are not shown, because the alternative is reading a figure across from a sibling floorplan or from what the segment usually does — and a number nobody published is worth less than an admitted gap.

Not published for this floorplan: tire specification, awning. If you find one of these in a manufacturer document for this plan, it belongs on this page.

The completeness figure at the foot of this page (98%) measures the same thing on the full field set: it is a measurement of how much this floorplan’s manufacturer publishes, not of how much research went into the page.

How every figure here was sourced and checked is set out on the methodology page.