01 What makes it unique
The Riverstone 45FLE leaves Forest River's factory at 19,771 lbs dry, with a published GVWR of 24,000 lbs and 4,229 lbs of cargo capacity between the two. Cargo capacity is 18% of the loaded rating, and Forest River's own definition is worth reading before you plan against it: cargo capacity is what remains for fresh water, gear, food, batteries and every dealer-installed accessory. Fresh water alone is 8.3 lb per gallon, so filling this trailer's 79-gallon fresh tank spends 656 lbs of that 4,229 lbs before anything else is loaded.
Pin weight is 3,820 lbs, which is 19% of the dry weight. That figure lands on the truck's rear axle and comes straight off its payload rating - not its towing rating, which is the number most often quoted and the wrong one for this decision. Pin weight rises as the trailer is loaded, and a fifth wheel loaded toward its cargo capacity will put substantially more than 3,820 lbs over the bed. Read the payload figure on your own door sticker rather than a brochure maximum for the model.
Tank capacities are 79 gallons fresh, 100 grey and 50 black, 150 gallons of waste capacity against 79 gallons of supply. The ratio is what governs how long the trailer can sit off hookups: waste capacity exceeds fresh, so the fresh tank is the binding constraint and refilling extends the stay. Forest River publishes these three figures per floorplan, and they are the factory's numbers rather than a segment average.
Against the rest of the Riverstone roster this is the 10th of 10 floorplans by dry weight, in a line that runs from 16,511 lbs to 19,771 lbs. It is the heaviest plan in the line, so the tow vehicle should be settled before the floorplan is. Comparing floorplans inside one line is more reliable than comparing across brands, because every figure here comes from the same factory channel on the same day.
A useful way to read the pair of weights is to stop planning against the dry figure. Nobody tows a trailer at 19,771 lbs: that is the weight before water, batteries, propane, bedding, food, tools and anything the dealer bolted on. Load half the published cargo capacity, which is modest for a family trip, and this plan is already near 21,885 lbs on the road. Compare that number against the tow vehicle, not the dry weight, and leave margin on top of it - the published GVWR of 24,000 lbs is a limit rather than a target.
Every number above was captured twice from Forest River and checked against itself before it was published. The line listing and the individual floorplan page are two separate factory renderings of the same trailer, and this plan's 4 shared figures agree exactly on both. Dry weight plus cargo capacity also equals the published GVWR exactly, which is the arithmetic check this site runs on every profiled floorplan. Where a figure is missing from this page it is because Forest River does not publish it in this channel, not because it was hard to find - and the row says so rather than being quietly dropped.
Forest River publishes no floorplan description for this plan in the channel this page is built from - only the numeric specification block. Rather than describe a layout from the floorplan code, which would be a guess dressed as a fact, this page carries what the factory publishes and says where it stops. 45FLE is a Riverstone designation and this site does not decode it into a layout claim.
How the 45FLE differs from the other nine Riverstone floorplans. Most distinctive first. Each rank counts only the siblings that publish that field, and a figure most of them share is left out. Not every one of these pages covers the same model years as this one (2027); each figure is the one its own page prints, so a rank compares pages, not one model year.
- Dry weight, 19,771 lb: heaviest of ten; next is the 44DBL (19,271 lb).
- Pin weight, 3,820 lb: heaviest of nine; next is the 421FK (3,635 lb).
- Length, 44 ft 11 in: longest of ten; next is the 43BFC (44 ft 10 in).
- Cargo capacity, 4,229 lb: third-smallest of ten, between the 39RKFB (2,464 lb) and the 44DBL (4,669 lb).
- Cargo capacity as a share of GVWR, 17.6%: third-smallest of ten, between the 39RKFB (13%) and the 44DBL (19.5%).
- Pin weight as a share of dry weight, 19.3%: largest of nine, level with the 421FK; next is the 38BMB (18.9%).
- GVWR, 24,000 lb: highest of ten, level with the 420RE, 421FK and two others; next is the 44DBL (23,940 lb).
- Black tank, 50 gal: shared with the 38BMB, 420RE and 42FSKG; of ten, two smaller and four larger, nearest the 421FK and 425FO (40 gal) and the 39RKFB, 442MC and 44DBL (80 gal).
- Grey tank, 100 gal: shared with the 38BMB, 420RE and two others; of ten, three smaller and two larger, nearest the 39RKFB, 425FO and 442MC (80 gal) and the 421FK and 44DBL (120 gal).
Next to the 44DBL (2026 page), the nearest lighter floorplan by dry weight, the 45FLE is 500 lb heavier by dry weight, has a GVWR 60 lb higher, has 440 lb less cargo capacity, has a pin weight 880 lb heavier, is 6 in longer, has a grey tank 20 gal smaller and has a black tank 30 gal smaller; the two publish the same exterior height and fresh tank.
02 Full specifications
Dimensions
- Exterior length
- 44' 11"
- Exterior height
- 13' 5"
- Exterior width
- 102"
Weights
- Dry / unit base weight (UVW)
- 19,771 lbs
- GVWR (max loaded)
- 24,000 lbs
- Net cargo / payload (CCC)
- 4,229 lbs
- Hitch / pin weight
- 3,820 lbs
Capacities
- Fresh water
- 79 gal
- Grey water
- 100 gal
- Black water
- 50 gal
Running gear
- Hitch type
- Fifth wheel (pin box)
- Axles
- Not published by Forest River
- Tires
- Not published by Forest River
Sleeping & layout
- Sleeps
- Not published by Forest River
- Awnings
- 11'6" & 11'6"
How these published figures sit against the rest of the catalogue: fifth wheel pin weight and payload; fresh, grey and black tank sizes; camper trailer size chart.
Drawn to scale
Weight budget
Size, with end view
Holding tanks
Axles, wheels and nose shape are schematic; not a floorplan. Data: dataset.
Towing it
Check your vehicle. Enter the ratings from your owner’s manual and the door-pillar placard.
Compares your figures with this page’s published GVWR (24,000 lb) and the upper loaded pin estimate (6,000 lb, a rule of thumb). Your vehicle’s placard and the trailer’s own weight label govern.
Loaded range: 15–25% of GVWR on the pin, a rule of thumb, not a measurement of this unit. No truck ratings or hitch classes (why; NHTSA, DOT HS 809 433). The range starts at the published figure, because loaded is never lighter than that.
03 The Riverstone floorplan family
Ten 2027 Riverstone floorplans with a full factory record, read from Forest River on 22 Oct 2026. They run 16,121 to 19,771 lb dry on lengths of 39 feet 7 inches to 45 feet 3 inches, with hitch weights of 2,845 to 4,235 lb and cargo capacities of 2,064 to 5,629 lb. Forest River publishes a GVWR for all ten, from 18,950 to 24,000 lb, and dry weight plus cargo capacity equals it exactly on every one.
| Floorplan | Nominal | Dry weight (lb) | GVWR (lb) | Notable |
|---|---|---|---|---|
| 39RKFB | 42' 8" | 16,121 | 18,950 | Fifth Wheels |
| 38BMB | 39' 7" | 17,186 | 19,250 | Fifth Wheels |
| 420RE | 45' 3" | 18,371 | 24,000 | Fifth Wheels |
| 442MC | 43' 9" | 18,591 | 23,845 | Fifth Wheels |
| 42FSKG | 44' 5" | 19,256 | 24,000 | Toy Haulers |
| 44DBL | 45' 1" | 19,316 | 23,940 | Fifth Wheels |
| 421FK | 44' 7" | 19,466 | 24,000 | Fifth Wheels |
| 43BFC | 45' 2" | 19,626 | 24,000 | Fifth Wheels |
| 425FO | 44' 11" | 19,646 | 24,000 | Fifth Wheels |
| 45FLE | 44' 11" | 19,771 | 24,000 | Fifth Wheels |
Forest River's 2027 Riverstone roster, read 22 Oct 2026, lists ten floorplans. 38BMB, 42FSKG, 45FLE are on this site for the first time; seven already have their own page here, which keeps the record it was built from. Sleeping capacity, axle count, tire size and MSRP are not published in this channel.
04 Notes on this floorplan
What Forest River does not publish for this line
Sleeping capacity, axle count, tire size and MSRP are absent from Forest River's specification channel for Riverstone, so they are absent here. They are not estimated from the segment, not carried over from a sibling floorplan, and not taken from a dealer listing quoting itself. A tire size in particular is a safety-relevant number that differs between two codes a digit apart, and this site does not guess one.
Weigh it before you tow it
Every figure on this page is a factory publication for a standard build. Forest River's own footnote on unloaded weight calls it an estimated average based on a standard build with optional equipment, and options, dealer-installed accessories and the previous owner's additions all move it. The only weight that governs your towing decision is the one under your own trailer on a scale, loaded the way you actually travel.
05 How it compares
19,646 lbs dry against this plan's 19,771 lbs, a difference of 125 lbs. Same line, same factory channel, same model year - so the gap is a real one rather than a difference in how two brands measure.
5,935 lbs of cargo capacity, the highest of the 10 Riverstone floorplans profiled here. If payload rather than length is the binding constraint, that is the plan to compare against.
06 Loading it for a trip
A full 79-gallon fresh tank is about 656 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 16% of the 45FLE’s 4,229 lb cargo capacity, leaving 3,573 lb. Across 10 Riverstone floorplans the water share runs 11% to 32%, and 2 give up more than this one. Nearest on that share: Riverstone 44DBL at 14% and Riverstone 39RKFB at 27%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).
07 Where this floorplan sits
Closest sibling: the Riverstone 42FSKG, nearest on the published figures. It differs on 4 of the 8 fields both publish (this plan first): length 44 ft 11 in vs 44 ft 5 in; dry weight 19,771 lb vs 19,256 lb; cargo capacity 4,229 lb vs 4,744 lb; hitch weight 3,820 lb vs 4,235 lb. They match on GVWR, fresh tank, grey tank and black tank.
| Riverstone plans | This plan | Position, low to high | Range |
|---|---|---|---|
| GVWR (lb) | 24,000 | 6–10 of 10 | 18,975–24,000 |
| Dry weight (lb) | 19,771 | 10 of 10 | 16,511–19,771 |
| Cargo capacity (lb) | 4,229 | 3 of 10 | 2,064–5,935 |
| Hitch weight (lb) | 3,820 | 9 of 10 | 2,845–4,235 |
| Length | 44 ft 11 in | 10 of 10 | 39 ft 7 in–44 ft 11 in |
| Grey tank (gal) | 100 | 4–8 of 10 | 80–120 |
| Black tank (gal) | 50 | 3–6 of 10 | 40–100 |
Either side of it by GVWR: Riverstone 42FSKG matches it at 24,000 lb GVWR.
| Nearest Riverstone siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| Riverstone 45FLE | 44 ft 11 in | — | 19,771 | 24,000 | 4,229 | 3,820 | 79 |
| Riverstone 42FSKG | 44 ft 5 in | — | 19,256 | 24,000 | 4,744 | 4,235 | 79 |
| Riverstone 420RE | 44 ft 9 in | 4 | 18,065 | 24,000 | 5,935 | 3,240 | 79 |
| Riverstone 421FK | 44 ft 0 in | 4 | 18,786 | 24,000 | 5,214 | 3,635 | 79 |
| Riverstone 44DBL | 44 ft 5 in | 6 | 19,271 | 23,940 | 4,669 | 2,940 | 79 |
| Riverstone 425FO | 44 ft 7 in | 6 | 18,451 | 24,000 | 5,549 | 3,055 | 79 |
All 10 Riverstone floorplans: Riverstone line hub.
| Other lines, nearest by GVWR | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| 45FLE | 24,000 | 19,771 | — | 44 ft 11 in |
| Momentum 381MS | 23,500 | 17,722 | 6 | 43 ft 11 in |
| Solitude 414LJMJ | 23,500 | 19,000 | 6 | 42 ft 10 in |
| Model G 3950 | 23,000 | 18,700 | 8 | 45 ft 5 in |
| Cyclone 3913 | 21,000 | 15,435 | 8 | 46 ft 5 in |
| Nightfall 397NHD | 21,000 | 15,674 | — | 45 ft 0 in |
| Sandstorm 4017GX | 21,000 | 15,674 | — | 45 ft 0 in |
Against the 45FLE: the Momentum 381MS is 500 lb lighter and 1 ft shorter; the Solitude 414LJMJ is 500 lb lighter and 2 ft shorter; the Model G 3950 is 1,000 lb lighter.
08 Common questions about the 45FLE
How much does the 45FLE weigh?
19,771 lb dry; 24,000 lb GVWR, the most it may weigh loaded.
How much can the 45FLE carry?
4,229 lb, 18% of its GVWR (median across 310 fifth wheels here: 19%). A full fresh tank uses 656 lb of it.
What is the pin weight of the 45FLE?
3,820 lb as published, 19% of the dry weight (median across 411 fifth wheels here: 19%).
What size tow vehicle does the 45FLE need?
A tow rating of at least 24,000 lb, plus payload for the loaded pin weight, passengers and cargo.
What are the tank capacities on the 45FLE?
Fresh 79, grey 100, black 50 gallons. Off hookups, fresh water runs out first.
How long is the 45FLE?
44' 11" overall, tongue or pin box included.
From the figures above.
09 What this page publishes, and what it does not
11 of the 18 fields this catalogue tracks are published for the 45FLE. Not published: interior height, sleeps, slide count, axle count, tire specification, refrigerator, air conditioning.
Sourcing rules: methodology.
10 Manuals & documents
Sources: forestriverinc.com (linked below); the full source note is at the foot of the page.
11 NHTSA safety record
NHTSA holds 8 recall campaigns and 5 owner complaints (model years 2005 on) against the Riverstone line. They are counted separately: a recall is a confirmed defect with a remedy, a complaint one owner’s unverified account.
Too few reports to show a pattern. 5 complaints have been filed on this line — not enough to say what fails most often. They cover service brakes, unknown or other and suspension.
Recall coverage here is not complete, and complaints are owners’ unverified reports (how this record is built). Check a specific VIN at NHTSA before you buy. Full tables are on the Riverstone line page.