01 What makes it unique
Forest River lists the 2020 XLR Thunderbolt 369AMP at 13,644 lb dry, a net carrying capacity of 3,496 lb and a pin weight of 3,140 lb. It prints no GVWR for it.
It is 39' 10" long and 13' 4" high. Forest River prints its tanks as 150 gal fresh, 64 gal grey, 32 gal black.
Among the 5 XLR Thunderbolt floorplans Forest River’s XLR Thunderbolt brochure (filed in Forest River’s /brochures/2020/ folder; the brochure prints no year) lists with a published dry weight, it is number 1 from the lightest, in a range from 13,644 lb (XLR Thunderbolt 369AMP) to 16,364 lb (XLR Thunderbolt 422AMP). Every figure in that comparison is Forest River’s, for the same model year.
Every number on this page was read on 6 Nov 2026 from Forest River’s XLR Thunderbolt brochure (filed in Forest River’s /brochures/2020/ folder; the brochure prints no year); model year 2020 comes from where the maker files it on its own site, not from the document’s text.
How the 369AMP differs from the other four XLR Thunderbolt floorplans. Most distinctive first. How these ranks are worked out.
- Dry weight, 13,644 lb: lightest of five; next is the 381AMP (15,449 lb).
- Cargo capacity, 3,496 lb: smallest of five; next is the 422AMP (4,636 lb).
- Pin weight, 3,140 lb: lightest of five; next is the 413AMP (3,323 lb).
- Length, 39 ft 10 in: shortest of five; next is the 382AMP (43 ft 9 in).
- Grey tank, 64 gal: smallest of five; next is the 382AMP (80 gal).
- Black tank, 32 gal: smallest of five; next are the 381AMP and 382AMP (80 gal).
- Pin weight as a share of dry weight, 23%: second-largest of five, between the 422AMP (22.3%) and the 382AMP (23.9%).
- Fresh tank, 150 gal: second-smallest of five, between the 381AMP (102 gal) and the 382AMP, 413AMP and 422AMP (158 gal).
Next to the 381AMP, the nearest heavier floorplan by dry weight, the 369AMP is 1,805 lb lighter by dry weight, has 2,055 lb less cargo capacity, has a pin weight 195 lb lighter, is 4 ft 2 in shorter, has a fresh tank 48 gal larger, has a grey tank 36 gal smaller and has a black tank 48 gal smaller; the two publish the same exterior height.
02 Full specifications
Dimensions
- Exterior length
- 39' 10"
- Exterior height
- 13' 4"
- Exterior width
- 102"
- Interior height
- Not published by Forest River
Weights
- Dry / unit base weight (UVW)
- 13,644 lb
- GVWR (max loaded)
- Not published by Forest River
- Net cargo / payload (CCC)
- 3,496 lb
- Hitch / pin weight
- 3,140 lb
Capacities
- Fresh water
- 150 gal
- Grey water
- 64 gal
- Black water
- 32 gal
Running gear
- Hitch type
- Fifth wheel (pin box)
- Tire size
- Not published by Forest River
Sleeping & layout
- Sleeps
- Not published by Forest River
- Model year source
- The brochure prints no model year; the maker files it in its own /brochures/2020/ folder.
- Tires (as printed)
- Standards list: "16” Radial Tires w/ Nitrofill™"
- Awning
- 18'
How these published figures sit against the rest of the catalogue: travel trailer tongue weight by size; 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.
03 The XLR Thunderbolt floorplan family
Forest River’s XLR Thunderbolt brochure (filed in Forest River’s /brochures/2020/ folder; the brochure prints no year) lists 5 XLR Thunderbolt floorplans; every one with a printed weight has a page here.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| XLR Thunderbolt 369AMP | 39' 10" | — | Profiled |
| XLR Thunderbolt 381AMP | 44' 0" | — | Profiled |
| XLR Thunderbolt 382AMP | 43' 9" | — | Profiled |
| XLR Thunderbolt 413AMP | 44' 6" | — | Profiled |
| XLR Thunderbolt 422AMP | 44' 6" | — | Profiled |
Forest River’s XLR Thunderbolt brochure (filed in Forest River’s /brochures/2020/ folder; the brochure prints no year) lists 5 XLR Thunderbolt floorplans. Every one with a printed weight has a page here.
04 Notes on this floorplan
What Forest River does not publish for the XLR Thunderbolt 369AMP
Forest River prints no GVWR, tire size, interior height, sleeping capacity for this model, so none is given. Nothing is filled from a sibling model, a different model year or a dealer listing.
Read the label on the trailer
Federal rules put a load-carrying label inside every RV trailer: its unloaded weight with full propane, its cargo carrying capacity and its GVWR (49 CFR 571.110 and 571.120). Those figures come from the trailer itself and govern the towing decision.
05 How it compares
15,449 lb dry and Not published by Forest River GVWR, against this model’s 13,644 lb and Not published by Forest River.
06 Loading it for a trip
A full 150-gallon fresh tank is about 1,245 lb of water, 36% of the XLR Thunderbolt 369AMP’s 3,496 lb cargo capacity, leaving 2,251 lb. Across 5 XLR Thunderbolt floorplans the water share runs 15% to 36%, and this plan’s is the highest. Nearest on that share: XLR Thunderbolt 422AMP at 28%.
07 Where this floorplan sits
Closest sibling: the XLR Thunderbolt 382AMP, nearest on the published figures. It differs on 7 of the 7 fields both publish (this plan first): length 39 ft 10 in vs 43 ft 9 in; dry weight 13,644 lb vs 15,729 lb; cargo capacity 3,496 lb vs 5,271 lb; hitch weight 3,140 lb vs 3,760 lb; fresh tank 150 gal vs 158 gal; grey tank 64 gal vs 80 gal; black tank 32 gal vs 80 gal.
| XLR Thunderbolt plans | This plan | Position, low to high | Range |
|---|---|---|---|
| Dry weight (lb) | 13,644 | 1 of 5 | 13,644–16,364 |
| Cargo capacity (lb) | 3,496 | 1 of 5 | 3,496–5,551 |
| Hitch weight (lb) | 3,140 | 1 of 5 | 3,140–3,760 |
| Length | 39 ft 10 in | 1 of 5 | 39 ft 10 in–44 ft 6 in |
| Fresh tank (gal) | 150 | 2 of 5 | 102–158 |
| Grey tank (gal) | 64 | 1 of 5 | 64–118 |
| Black tank (gal) | 32 | 1 of 5 | 32–86 |
Either side of it by dry weight: XLR Thunderbolt 381AMP is 1,805 lb heavier (15,449 lb dry).
| Nearest XLR Thunderbolt siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| XLR Thunderbolt 369AMP | 39 ft 10 in | — | 13,644 | — | 3,496 | 3,140 | 150 |
| XLR Thunderbolt 382AMP | 43 ft 9 in | — | 15,729 | — | 5,271 | 3,760 | 158 |
| XLR Thunderbolt 422AMP | 44 ft 6 in | — | 16,364 | — | 4,636 | 3,643 | 158 |
| XLR Thunderbolt 413AMP | 44 ft 6 in | — | 16,280 | — | 4,720 | 3,323 | 158 |
| XLR Thunderbolt 381AMP | 44 ft 0 in | — | 15,449 | — | 5,551 | 3,335 | 102 |
All 5 XLR Thunderbolt floorplans: XLR Thunderbolt line hub.
| Other lines, nearest by dry weight | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| XLR Thunderbolt 369AMP | — | 13,644 | — | 39 ft 10 in |
| New Vision Sportster 38P | 18,000 | 13,650 | — | 40 ft 5 in |
| Salem Villa 40ZZZ | — | 13,694 | — | 45 ft 0 in |
| Sportster X 3411X | 16,000 | 13,560 | 7 | 39 ft 11 in |
| Beacon 34RLB | 18,000 | 13,520 | — | 34 ft 8 in |
| Puma Vista 421LFT | 15,299 | 13,499 | — | 42 ft 10 in |
| Cedar Creek Cottage 40CBK | 15,565 | 13,478 | — | 41 ft 6 in |
Against the XLR Thunderbolt 369AMP: the New Vision Sportster 38P is 6 lb heavier; the Salem Villa 40ZZZ is 50 lb heavier and 5 ft longer; the Sportster X 3411X is 84 lb lighter.
08 Common questions about the XLR Thunderbolt 369AMP
How much can the XLR Thunderbolt 369AMP carry?
3,496 lb. A full fresh tank uses 1,245 lb of it.
What is the pin weight of the XLR Thunderbolt 369AMP?
3,140 lb as published, 23% of the dry weight (median across 2,002 travel trailers here: 12%).
What are the tank capacities on the XLR Thunderbolt 369AMP?
Fresh 150, grey 64, black 32 gallons. Off hookups, the waste tanks fill first.
How long is the XLR Thunderbolt 369AMP?
39' 10" overall, tongue or pin box included.
From the figures above.
09 What this page publishes, and what it does not
10 of the 18 fields this catalogue tracks are published for the XLR Thunderbolt 369AMP. Not published: GVWR, 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.