01 What makes it unique
Outdoors RV lists the Back Country 20MKS at 6,700 lb dry, a net carrying capacity of 3,295 lb and a tongue weight of 750 lb. It prints no GVWR for it.
It is 25'1" long and 11'7" w/AC high. Outdoors RV prints its tanks as 100 gal fresh, 50 gal grey, 40 gal black.
Among the 9 Back Country floorplans Outdoors RV’s Back Country model pages on outdoorsrvmfg.com (no model year stated) lists with a published dry weight, it is number 2 from the lightest, in a range from 6,250 lb (Back Country 21BD) to 9,550 lb (Back Country 26RPS). Every figure in that comparison is Outdoors RV’s, read from the same set of model pages.
Every number on this page was read on 6 Nov 2026 from Outdoors RV’s own Back Country model pages on outdoorsrvmfg.com (no model year stated) for the Back Country 20MKS, which names no model year; the figures are shown as the maker published them, and no year is claimed for them.
How the 20MKS differs from the other eight Back Country floorplans. Most distinctive first. How these ranks are worked out.
- Tongue weight, 750 lb: lightest of nine; next is the 21BD (755 lb).
- Length, 25 ft 1 in: shortest of nine; next is the 21BD (26 ft 1 in).
- Dry weight, 6,700 lb: second-lightest of nine, between the 21BD (6,250 lb) and the 21RWS (6,800 lb).
- Tongue weight as a share of dry weight, 11.2%: third-smallest of nine, between the 27SPS (10.5%) and the 21BD and 28DBS (12.1%).
- Cargo capacity, 3,295 lb: fifth-smallest of nine, between the 21RWS (3,195 lb) and the 26RPS (3,445 lb).
Next to the 21BD, the nearest lighter floorplan by dry weight, the 20MKS is 450 lb heavier by dry weight, has 450 lb less cargo capacity, has a tongue weight 5 lb lighter, is 1 ft shorter and has a grey tank 10 gal larger; the two publish the same exterior height, interior height, fresh tank and black tank.
Next to the 21RWS, the nearest heavier floorplan by dry weight, the 20MKS is 100 lb lighter by dry weight, has 100 lb more cargo capacity, has a tongue weight 150 lb lighter and is 1 ft 5 in shorter; the two publish the same exterior height, interior height, fresh tank, grey tank and black tank.
02 Full specifications
Dimensions
- Exterior length
- 25'1"
- Exterior height
- 11'7" w/AC
- Exterior width
- Not published by Outdoors RV
- Interior height
- 6'11"
Weights
- Dry / unit base weight (UVW)
- 6,700 lb
- GVWR (max loaded)
- Not published by Outdoors RV
- Net cargo / payload (CCC)
- 3,295 lb
- Hitch / tongue weight
- 750 lb
Capacities
- Fresh water
- 100 gal
- Grey water
- 50 gal
- Black water
- 40 gal
Running gear
- Hitch type
- Bumper pull
- Tire size
- ST235/80/16E
Sleeping & layout
- Sleeps
- Not published by Outdoors RV
- Model year
- Not stated by Outdoors RV; figures as published on Outdoors RV's site (https://outdoorsrvmfg.com/back-country-series-20mks/), read 6 Nov 2026
- Body type basis (as printed)
- listed under Travel Trailers menu ("Back Country Class - Travel Trailer")
- Titanium FF Dry Weight - Lbs.
- 7180
- Water Heater Capacity (approx. gal)
- 10
- Load Range
- E
- Heavy Duty 5 Lug Axles (lbs)
- 5200(2)
- Climate Designed Furnace
- 35K
- LPG Capacity (approx. pounds)
- 80
- Maximum Trailer Weight - Lbs.
- 9995
- Weight basis (as printed)
- "Full Feature Dry Weight" (Mountain Series) used as dry weight; Titanium FF dry weight shown separately. "Maximum Trailer Weight" is printed as its own figure; the page does not call it GVWR.
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 (no width published)
Holding tanks
Axles, wheels and nose shape are schematic; not a floorplan. Data: dataset.
03 The Back Country floorplan family
Outdoors RV’s Back Country model pages on outdoorsrvmfg.com (no model year stated) lists 9 Back Country floorplans; every one with a printed weight has a page here.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| Back Country 21BD | 26'1" | — | Profiled |
| Back Country 20MKS | 25'1" | — | Profiled |
| Back Country 21RWS | 26'6" | — | Profiled |
| Back Country 23BCS | 28'0" | — | Profiled |
| Back Country 24KRS | 28'11" | — | Profiled |
| Back Country 25DVS | 31'3" | — | Profiled |
| Back Country 28DBS | 33'4" | — | Profiled |
| Back Country 27SPS | 33'2" | — | Profiled |
| Back Country 26RPS | 31'11" | — | Profiled |
Outdoors RV’s Back Country model pages on outdoorsrvmfg.com (no model year stated) lists 9 Back Country floorplans. Every one with a printed weight has a page here.
04 Notes on this floorplan
What Outdoors RV does not publish for the Back Country 20MKS
Outdoors RV prints no GVWR, 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
6,250 lb dry and Not published by Outdoors RV GVWR, against this model’s 6,700 lb and Not published by Outdoors RV.
6,800 lb dry and Not published by Outdoors RV GVWR, against this model’s 6,700 lb and Not published by Outdoors RV.
06 Loading it for a trip
A full 100-gallon fresh tank is about 830 lb of water, 25% of the Back Country 20MKS’s 3,295 lb cargo capacity, leaving 2,465 lb. Across 9 Back Country floorplans the water share runs 21% to 32%, and 4 give up more than this one. Nearest on that share: Back Country 26RPS at 24% and Back Country 21RWS at 26%.
07 Where this floorplan sits
Closest sibling: the Back Country 21RWS, nearest on the published figures. It differs on 4 of the 7 fields both publish (this plan first): length 25 ft 1 in vs 26 ft 6 in; dry weight 6,700 lb vs 6,800 lb; cargo capacity 3,295 lb vs 3,195 lb; hitch weight 750 lb vs 900 lb. They match on fresh tank, grey tank and black tank.
| Back Country plans | This plan | Position, low to high | Range |
|---|---|---|---|
| Dry weight (lb) | 6,700 | 2 of 9 | 6,250–9,550 |
| Cargo capacity (lb) | 3,295 | 5 of 9 | 2,565–3,895 |
| Hitch weight (lb) | 750 | 1 of 9 | 750–995 |
| Length | 25 ft 1 in | 1 of 9 | 25 ft 1 in–33 ft 4 in |
| Grey tank (gal) | 50 | 2–5 of 7 | 40–67 |
Either side of it by dry weight: Back Country 21BD is 450 lb lighter (6,250 lb dry); Back Country 21RWS is 100 lb heavier (6,800 lb dry).
| Nearest Back Country siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| Back Country 20MKS | 25 ft 1 in | — | 6,700 | — | 3,295 | 750 | 100 |
| Back Country 21RWS | 26 ft 6 in | — | 6,800 | — | 3,195 | 900 | 100 |
| Back Country 21BD | 26 ft 1 in | — | 6,250 | — | 3,745 | 755 | 100 |
| Back Country 23BCS | 28 ft 0 in | — | 7,150 | — | 2,845 | 900 | 100 |
| Back Country 25DVS | 31 ft 3 in | — | 7,550 | — | 3,450 | 950 | 100 |
| Back Country 24KRS | 28 ft 11 in | — | 7,430 | — | 2,565 | 965 | 100 |
All 9 Back Country floorplans: Back Country line hub.
| Other lines, nearest by weight | GVWR (lb) | Dry or base (lb) | Sleeps | Length |
|---|---|---|---|---|
| Back Country 20MKS | — | 6,700 | — | 25 ft 1 in |
| Flying Cloud 30FB Bunk | 8,800 | 6,700 | 8 | 31 ft 2 in |
| Jag 32JSS | 10,000 | 6,700 | — | 33 ft 6 in |
| Timber Ridge 25SBS | — | 6,700 | — | 29 ft 4 in |
| Stealth 2450SLX | 11,700 | 6,700 | — | 28 ft 2 in |
| Salem / Wildwood 26DBHD | — | 6,708 | — | 32 ft 11 in |
| Nash 23CK | 9,200 | 6,691 | 4 | 27 ft 8 in |
Against the Back Country 20MKS: the Flying Cloud 30FB Bunk is 6 ft longer; the Jag 32JSS is 8 ft longer; the Timber Ridge 25SBS is 4 ft longer.
08 Common questions about the Back Country 20MKS
How much can the Back Country 20MKS carry?
3,295 lb. A full fresh tank uses 830 lb of it.
What is the tongue weight of the Back Country 20MKS?
750 lb as published, 11% of the dry weight (median across 2,002 travel trailers here: 12%).
What are the tank capacities on the Back Country 20MKS?
Fresh 100, grey 50, black 40 gallons. Off hookups, the waste tanks fill first.
How long is the Back Country 20MKS?
25'1" 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 Back Country 20MKS. Not published: GVWR, exterior width, sleeps, slide count, axle count, awning, refrigerator, air conditioning, tire size (a description is published, a size is not).
Sourcing rules: methodology.
10 Manuals & documents
Sources: outdoorsrvmfg.com (linked below); the full source note is at the foot of the page.
11 NHTSA safety record
NHTSA holds 2 recall campaigns against the Back Country line (a recall and a complaint are not the same thing).
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 Back Country line page.