01 What makes it unique
The XLR Nitro 40G17 leaves Forest River's factory at 15,674 lbs dry with 5,326 lbs of cargo capacity. Forest River publishes no GVWR for this line, so the loaded rating is not quoted on this page and is not computed from the other two figures. What the cargo number covers is defined by the factory: fresh water, gear, food, batteries and every dealer-installed accessory come out of it. Fresh water is 8.3 lb per gallon, so filling the 150-gallon fresh tank spends 1,245 lbs of the 5,326 lbs before anything else goes in.
Pin weight is 3,765 lbs, 24% of the dry weight as published; it rises as the trailer is loaded and comes off the truck’s payload, not its towing rating, so check it against the payload on your own door sticker (pin weight and payload).
Off hookups: 200 gallons of grey and black capacity against 150 gallons of fresh water, so fresh water runs out first (tank sizes by length).
Against the rest of the XLR Nitro roster this is the 3rd of 5 floorplans by dry weight, in a line that runs from 13,124 lbs to 16,949 lbs. It sits in the middle of the line by weight.
Plan the tow on loaded weight, not the 15,674 lbs dry figure: half the published cargo capacity brings this plan to about 18,337 lbs. Forest River publishes no loaded rating for this line, so the ceiling is the one on the trailer’s own weight label (how to read trailer weights).
Forest River’s line listing and this floorplan’s own factory page agree on all 4 shared figures. No GVWR is published for this line, so dry plus cargo has no rating to check against. A missing row means Forest River does not publish that figure (how figures are verified).
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. 40G17 is a XLR Nitro designation and this site does not decode it into a layout claim.
How the 40G17 differs from the other four XLR Nitro floorplans. Most distinctive first. How these ranks are worked out.
- Cargo capacity, 5,326 lb: largest of five; next is the 41G14 (5,321 lb).
- Pin weight, 3,765 lb: heaviest of five; next is the 40BAR13 (3,480 lb).
- Pin weight as a share of dry weight, 24%: second-largest of five, between the 35G13 (23.3%) and the 32W17 (24.1%).
- Dry weight, 15,674 lb: third-lightest of five, between the 35G13 (13,969 lb) and the 41G14 (15,679 lb).
- Length, 45 ft: third-shortest of five, between the 35G13 (40 ft 5 in) and the 41G14 (45 ft 1 in).
Next to the 35G13, the nearest lighter floorplan by dry weight, the 40G17 is 1,705 lb heavier by dry weight, has 2,045 lb more cargo capacity, has a pin weight 515 lb heavier and is 4 ft 7 in longer; the two publish the same exterior height, fresh tank, grey tank and black tank.
Next to the 41G14, the nearest heavier floorplan by dry weight, the 40G17 is 5 lb lighter by dry weight, has 5 lb more cargo capacity, has a pin weight 575 lb heavier and is 1 in shorter; the two publish the same exterior height, fresh tank, grey tank and black tank.
02 Full specifications
Dimensions
- Exterior length
- 45' 0"
- Exterior height
- 13' 6"
- Exterior width
- 102"
Weights
- Dry / unit base weight (UVW)
- 15,674 lbs
- GVWR (max loaded)
- Not published by Forest River for this line
- Net cargo / payload (CCC)
- 5,326 lbs
- Hitch / pin weight
- 3,765 lbs
Capacities
- Fresh water
- 150 gal
- Grey water
- 120 gal
- Black water
- 80 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
- Not published by Forest River
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
Size, with end view
Holding tanks
Axles, wheels and nose shape are schematic; not a floorplan. Data: dataset.
The 2027 model year, as Forest River lists it
Forest River’s own floorplan page lists the 2027 XLR Nitro 40G17 with the figures below (read 22 Oct 2026). They are that year’s record. The specifications above are the 2026 record; the two are not merged, and neither fills a gap in the other. Against the 2026 record above, these figures differ: cargo carrying capacity 5,326 lb in 2026, 5,300 lb in 2027; length 45' 0" in 2026, 45' 7" in 2027. Forest River publishes no GVWR for this floorplan, so none is shown and none is computed.
| 2027 XLR Nitro 40G17 | As published |
|---|---|
| Hitch weight | 3,765 lb |
| Unloaded vehicle weight (UVW) | 15,674 lb |
| Cargo carrying capacity (CCC) | 5,300 lb |
| GVWR | Not published by Forest River |
| Length | 45' 7" |
| Height | 13' 6" |
| Width | 102" |
| Fresh / gray / black water | 150 gal / 120 gal / 80 gal |
| Awning | Not published |
| Sleeps | Not published |
03 The XLR Nitro floorplan family
XLR Nitro is the heaviest line in this group: five published floorplans from 13,124 to 16,949 lb dry, on pin weights of 3,160 to 3,765 lb. A pin weight in that band comes off the truck's payload before anyone loads the garage, and cargo capacity runs 3,281 to 5,326 lb on top of it. Forest River publishes no GVWR for any Nitro floorplan, so the rating a buyer needs to check against is not in the factory's own spec channel.
| Floorplan | Nominal | Dry weight (lb) | Cargo, CCC (lb) | Notable |
|---|---|---|---|---|
| 32W17 | 38' 4" | 13,124 | 4,036 | XLR Nitro Fifth Wheels |
| 35G13 | 40' 5" | 13,969 | 3,281 | XLR Nitro Fifth Wheels |
| 40G17 | 45' 0" | 15,674 | 5,326 | XLR Nitro Fifth Wheels |
| 41G14 | 45' 1" | 15,679 | 5,321 | XLR Nitro Fifth Wheels |
| 40BAR13 | 45' 6" | 16,949 | 4,051 | XLR Nitro Fifth Wheels |
XLR Nitro is Forest River's full-size fifth-wheel toy hauler, five floorplans published, from 38 feet 4 inches to 45 feet 6 inches. Forest River publishes dry weight, cargo capacity, pin weight, all three exterior dimensions and all three tank capacities for every plan, awning size for four of five, and no GVWR for any of them - so that row reads as unpublished rather than computed from cargo capacity. Sleeping capacity, axle count, tire size and MSRP are not published in this channel. Garage length is not published either, which for a toy hauler is the field a buyer most wants and the one this source does not carry.
04 Notes on this floorplan
What Forest River does not publish for this line
Sleeping capacity, axle count, tire size and MSRP are not in Forest River’s specification channel for XLR Nitro, so this page does not publish them and does not estimate them (how figures are verified).
There is no factory GVWR for this trailer
Forest River publishes dry weight, cargo capacity and pin weight for every XLR Nitro floorplan and publishes no GVWR for any of them. The factory's own glossary defines cargo capacity as GVWR minus UVW, which means the rating can be worked out - and a figure you worked out is not a figure the manufacturer published, so this page does not print one. Use the weight label on the trailer itself, which every Forest River unit carries.
Awning size is not published for this floorplan
Forest River publishes an awning size for some XLR Nitro floorplans and not for this one. The row reads as unpublished rather than being filled from a neighbouring plan in the same roster.
Weigh it before you tow it
Forest River calls its unloaded weight an estimated average for a standard build, and options and dealer add-ons change it, so weigh your own trailer loaded the way you travel (how figures are verified).
05 How it compares
13,969 lbs dry against this plan's 15,674 lbs, a difference of 1,705 lbs.
15,679 lbs dry, 5 lbs more than this plan, and 5,321 lbs of cargo capacity against this one's 5,326 lbs.
06 Loading it for a trip
A full 150-gallon fresh tank is about 1,245 lb of water, 23% of the 40G17’s 5,326 lb cargo capacity, leaving 4,081 lb. Across 5 XLR Nitro floorplans the water share runs 23% to 38%, and this plan’s is the lowest. Nearest on that share: XLR Nitro 41G14 at 23%.
07 Where this floorplan sits
Closest sibling: the XLR Nitro 41G14, nearest on the published figures. It differs on 4 of the 7 fields both publish (this plan first): length 45 ft 0 in vs 45 ft 1 in; dry weight 15,674 lb vs 15,679 lb; cargo capacity 5,326 lb vs 5,321 lb; hitch weight 3,765 lb vs 3,190 lb. They match on fresh tank, grey tank and black tank.
| XLR Nitro plans | This plan | Position, low to high | Range |
|---|---|---|---|
| Dry weight (lb) | 15,674 | 3 of 5 | 13,124–16,949 |
| Cargo capacity (lb) | 5,326 | 5 of 5 | 3,281–5,326 |
| Hitch weight (lb) | 3,765 | 5 of 5 | 3,160–3,765 |
| Length | 45 ft 0 in | 3 of 5 | 38 ft 4 in–45 ft 6 in |
| Grey tank (gal) | 120 | 1–4 of 5 | 120–123 |
| Black tank (gal) | 80 | 3–5 of 5 | 32–80 |
Either side of it by dry weight: XLR Nitro 35G13 is 1,705 lb lighter (13,969 lb dry); XLR Nitro 41G14 is 5 lb heavier (15,679 lb dry).
| Nearest XLR Nitro siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| XLR Nitro 40G17 | 45 ft 0 in | — | 15,674 | — | 5,326 | 3,765 | 150 |
| XLR Nitro 41G14 | 45 ft 1 in | — | 15,679 | — | 5,321 | 3,190 | 150 |
| XLR Nitro 35G13 | 40 ft 5 in | — | 13,969 | — | 3,281 | 3,250 | 150 |
| XLR Nitro 40BAR13 | 45 ft 6 in | — | 16,949 | — | 4,051 | 3,480 | 150 |
| XLR Nitro 32W17 | 38 ft 4 in | — | 13,124 | — | 4,036 | 3,160 | 150 |
All 5 XLR Nitro floorplans: XLR Nitro line hub.
| Other lines, nearest by dry weight | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| 40G17 | — | 15,674 | — | 45 ft 0 in |
| Nightfall 397NHD | 21,000 | 15,674 | — | 45 ft 0 in |
| Sandstorm 4017GX | 21,000 | 15,674 | — | 45 ft 0 in |
| North Point 391TBBH | 19,000 | 15,675 | 10 | — |
| Ahara 390DS | — | 15,664 | — | 42 ft 10 in |
| Bighorn 37MD | 18,100 | 15,650 | 8 | 42 ft 10 in |
| Paradigm 385FL | 19,000 | 15,636 | — | 41 ft 4 in |
Against the 40G17: the North Point 391TBBH is 1 lb heavier.
08 Common questions about the 40G17
How much can the 40G17 carry?
5,326 lb. A full fresh tank uses 1,245 lb of it.
What is the pin weight of the 40G17?
3,765 lb as published, 24% of the dry weight (median across 406 fifth wheels here: 19%).
What are the tank capacities on the 40G17?
Fresh 150, grey 120, black 80 gallons. Off hookups, fresh water runs out first.
How long is the 40G17?
45' 0" overall, tongue or pin box included.
From the figures above.
09 What this page publishes, and what it does not
9 of the 18 fields this catalogue tracks are published for the 40G17. Not published: GVWR, interior height, sleeps, slide count, axle count, tire specification, awning, 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.