2026 Forest River Riverstone425FO

The 425FO hides an office in plain sight. Its front section is a front living room with front entertainment — a theater sofa and two E-Z Glide sofa beds across from the television — but behind a swiveling entertainment center sits a hidden front office with ample counter space, the plan’s signature trick. A middle kitchen with a three-burner cooktop, two pantries and a pull-out dinette anchors the centre, and a private rear king bedroom with a 72-by-80 bed slide, a large wardrobe with the washer and dryer and a dresser with a 40-inch television closes the back. Six slide-outs open it up. It rides the full Riverstone build: a 102-inch-wide fully-welded frame, tandem 8,000-pound axles and an automatic six-point hydraulic level-up system.

Forest River lists a published 24,000-pound GVWR against the 18,451-pound dry weight, leaving a strong 5,549-pound payload and a 3,055-pound dry pin. Two 15,000-BTU heat-pump air conditioners, the 18-cubic-foot French-door refrigerator, a Truma AquaGo tankless water heater, a Splendide stackable washer and dryer and 200-watt solar with a 2,000-watt inverter are standard. This is the one plan where the standard ceiling fan is omitted.

At a starting MSRP around $212,000, with US street pricing well below the placard, it is the work-and-entertain Riverstone. For a remote worker or a couple who hosts — who wants a bright front lounge, a hidden office and a private rear king suite — and who tows with a one-ton truck, the 425FO is the line’s office-equipped plan.

Riverstone is Forest River's top-luxury full-profile fifth wheel — a step above Cedar Creek and a cross-shop against the upper trims of Keystone's Montana and Grand Design's Solitude. The 2026 fifth-wheel line runs to seven floorplans, and all seven are profiled here in full. The 425FO on this page is highlighted; each other plan links to its own page.

This floorplan carries its water comfortably. A full 79-gallon fresh tank is roughly 12% of the 5,549-pound cargo capacity, leaving the 425FO with a usable gear budget even when you tow full.

The published dry pin weight of 3,055 pounds is 17% of this floorplan’s 18,451-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 24,000-pound GVWR the 425FO is towing 5,549 pounds more than its 18,451-pound dry figure, and that is the number your vehicle has to be rated for — not the brochure weight.

Tank balance is generous here: 79 gallons of fresh against 80 grey and 40 black, so waste capacity keeps pace with supply and the fresh tank is the constraint that ends a dry stay.

Of the 7 Riverstone floorplans profiled here, the 425FO carries the highest GVWR at 24,000 pounds. It is the top of the line by weight, which makes tow-vehicle capability the first thing to settle rather than the last.

Either side of it in the same line: Riverstone 421FK matches it exactly at 24,000 lb GVWR.

2 other Riverstone plans share this floorplan’s 24,000 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 425FO: the Momentum 392M is 500 lb lighter and 1 ft longer and sleeps 3 more; the Solitude 414LJMJ is 500 lb lighter and 2 ft shorter; the Model G 3950 is 1,000 lb lighter and sleeps 2 more. 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 Riverstone floorplans profiled here run 16,511 to 19,271 pounds dry and 42 to 45 feet of exterior length across 7 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 Riverstone line hub.

This catalog tracks 18 specification fields per floorplan. Named sources publish 18 of them for the 425FO. 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 size (a tire description is published, a size is not). 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.