01 What makes it unique
Outdoors RV lists the Creek Side 21MKS at 6,200 lb dry, a net carrying capacity of 2,050 lb and a tongue weight of 750 lb. It prints no GVWR for it.
It is 26'10" long and 11'4" w/AC high. Outdoors RV prints its tanks as 78 gal fresh, 50 gal grey, 40 gal black.
Among the 9 Creek Side floorplans Outdoors RV’s Creek Side model pages on outdoorsrvmfg.com (no model year stated) lists with a published dry weight, it is number 8 from the lightest, in a range from 5,150 lb (Creek Side 17RBS) to 6,250 lb (Creek Side 22KVS). 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 Creek Side model pages on outdoorsrvmfg.com (no model year stated) for the Creek Side 21MKS, which names no model year; the figures are shown as the maker published them, and no year is claimed for them.
How the 21MKS differs from the other eight Creek Side floorplans. Most distinctive first. How these ranks are worked out.
- Dry weight, 6,200 lb: second-heaviest of nine, between the 19MKS (5,700 lb) and the 22KVS (6,250 lb).
- Tongue weight, 750 lb: second-heaviest of nine, between the 19CK, 19MKS and 21RBS (650 lb) and the 22KVS (850 lb).
- Tongue weight as a share of dry weight, 12.1%: second-largest of nine, between the 19CK (11.9%) and the 22KVS (13.6%).
- Length, 26 ft 10 in: second-longest of nine, between the 21RBS (25 ft 1 in) and the 22KVS (27 ft).
- Cargo capacity, 2,050 lb: fifth-smallest of nine, between the 17RBS (1,950 lb) and the 22KVS (2,500 lb).
- Grey tank, 50 gal: largest of eight, level with the 19CK, 19MKS and 21RBS; next are the 17CE, 17MKS and two others (40 gal).
Next to the 19MKS, the nearest lighter floorplan by dry weight, the 21MKS is 500 lb heavier by dry weight, has 500 lb less cargo capacity, has a tongue weight 100 lb heavier and is 2 ft 8 in longer; the two publish the same exterior height, interior height, fresh tank, grey tank and black tank.
Next to the 22KVS, the nearest heavier floorplan by dry weight, the 21MKS is 50 lb lighter by dry weight, has 450 lb less cargo capacity, has a tongue weight 100 lb lighter and is 2 in shorter; the two publish the same exterior height, interior height, fresh tank and black tank.
02 Full specifications
Dimensions
- Exterior length
- 26'10"
- Exterior height
- 11'4" w/AC
- Exterior width
- Not published by Outdoors RV
- Interior height
- 6'11"
Weights
- Dry / unit base weight (UVW)
- 6,200 lb
- GVWR (max loaded)
- Not published by Outdoors RV
- Net cargo / payload (CCC)
- 2,050 lb
- Hitch / tongue weight
- 750 lb
Capacities
- Fresh water
- 78 gal
- Grey water
- 50 gal
- Black water
- 40 gal
Running gear
- Hitch type
- Bumper pull
- Tire size
- ST225/75/15E
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/creek-side-21mks/), read 6 Nov 2026
- Body type basis (as printed)
- listed on Travel Trailers page / 1/2 Ton Towable Line
- Titanium FF Dry Weight - Lbs.
- 6580
- Water Heater Capacity (approx. gal)
- 6
- Load Range
- E
- Heavy Duty 5 Lug Axles (lbs)
- 4000(2)
- Climate Designed Furnace
- 25K
- LPG Capacity (approx. pounds)
- 60
- Maximum Trailer Weight - Lbs.
- 8250
- 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 Creek Side floorplan family
Outdoors RV’s Creek Side model pages on outdoorsrvmfg.com (no model year stated) lists 9 Creek Side floorplans; every one with a printed weight has a page here.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| Creek Side 17RBS | 21'10" | — | Profiled |
| Creek Side 17CE | 22'10" | — | Profiled |
| Creek Side 17MKS | 23'10" | — | Profiled |
| Creek Side 17SBS | 23'10" | — | Profiled |
| Creek Side 19CK | 24'10" | — | Profiled |
| Creek Side 21RBS | 25'1" | — | Profiled |
| Creek Side 19MKS | 24'2" | — | Profiled |
| Creek Side 21MKS | 26'10" | — | Profiled |
| Creek Side 22KVS | 27'0" | — | Profiled |
Outdoors RV’s Creek Side model pages on outdoorsrvmfg.com (no model year stated) lists 9 Creek Side floorplans. Every one with a printed weight has a page here.
04 Notes on this floorplan
What Outdoors RV does not publish for the Creek Side 21MKS
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
5,700 lb dry and Not published by Outdoors RV GVWR, against this model’s 6,200 lb and Not published by Outdoors RV.
6,250 lb dry and Not published by Outdoors RV GVWR, against this model’s 6,200 lb and Not published by Outdoors RV.
06 Loading it for a trip
A full 78-gallon fresh tank is about 647 lb of water, 32% of the Creek Side 21MKS’s 2,050 lb cargo capacity, leaving 1,403 lb. Across 9 Creek Side floorplans the water share runs 23% to 39%, and 4 give up more than this one. Nearest on that share: Creek Side 22KVS at 26% and Creek Side 17RBS at 33%.
07 Where this floorplan sits
Closest sibling: the Creek Side 22KVS, nearest on the published figures. It differs on 4 of the 6 fields both publish (this plan first): length 26 ft 10 in vs 27 ft 0 in; dry weight 6,200 lb vs 6,250 lb; cargo capacity 2,050 lb vs 2,500 lb; hitch weight 750 lb vs 850 lb. They match on fresh tank and black tank.
| Creek Side plans | This plan | Position, low to high | Range |
|---|---|---|---|
| Dry weight (lb) | 6,200 | 8 of 9 | 5,150–6,250 |
| Cargo capacity (lb) | 2,050 | 5 of 9 | 1,650–2,800 |
| Hitch weight (lb) | 750 | 8 of 9 | 500–850 |
| Length | 26 ft 10 in | 8 of 9 | 21 ft 10 in–27 ft 0 in |
| Grey tank (gal) | 50 | 5–8 of 8 | 40–50 |
Either side of it by dry weight: Creek Side 19MKS is 500 lb lighter (5,700 lb dry); Creek Side 22KVS is 50 lb heavier (6,250 lb dry).
| Nearest Creek Side siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| Creek Side 21MKS | 26 ft 10 in | — | 6,200 | — | 2,050 | 750 | 78 |
| Creek Side 22KVS | 27 ft 0 in | — | 6,250 | — | 2,500 | 850 | 78 |
| Creek Side 19MKS | 24 ft 2 in | — | 5,700 | — | 2,550 | 650 | 78 |
| Creek Side 21RBS | 25 ft 1 in | — | 5,600 | — | 2,650 | 650 | 78 |
| Creek Side 19CK | 24 ft 10 in | — | 5,450 | — | 2,800 | 650 | 78 |
| Creek Side 17SBS | 23 ft 10 in | — | 5,450 | — | 1,650 | 625 | 78 |
All 9 Creek Side floorplans: Creek Side line hub.
| Other lines, nearest by dry weight | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| Creek Side 21MKS | — | 6,200 | — | 26 ft 10 in |
| Heritage Glen Travel Trailers Wildwood Heritage Glen / Salem Hemisphere 22RBHL | — | 6,198 | — | 27 ft 6 in |
| Cascade 26SSC | 7,725 | 6,203 | — | 30 ft 9 in |
| Jay Flight 262RLS | 7,900 | 6,205 | 6 | 31 ft 1 in |
| Mesa Ridge Lite MR2802BH | 7,450 | 6,205 | — | — |
| Open Range Ultra Lite UT2802BH | 7,450 | 6,205 | — | — |
| White Hawk 25MBH | 7,500 | 6,195 | 8 | 30 ft 8 in |
Against the Creek Side 21MKS: the Heritage Glen Travel Trailers Wildwood Heritage Glen / Salem Hemisphere 22RBHL is 2 lb lighter; the Cascade 26SSC is 3 lb heavier and 4 ft longer; the Jay Flight 262RLS is 5 lb heavier and 4 ft longer.
08 Common questions about the Creek Side 21MKS
How much can the Creek Side 21MKS carry?
2,050 lb. A full fresh tank uses 647 lb of it.
What is the tongue weight of the Creek Side 21MKS?
750 lb as published, 12% of the dry weight (median across 2,002 travel trailers here: 12%).
What are the tank capacities on the Creek Side 21MKS?
Fresh 78, grey 50, black 40 gallons. Off hookups, fresh water runs out first.
How long is the Creek Side 21MKS?
26'10" 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 Creek Side 21MKS. 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 Creek Side line (a recall and a complaint are not the same thing).
Reports that name the 21MKS
1 of those record name this floorplan specifically rather than the line as a whole.
| Type | Date | Reference | What it says |
|---|---|---|---|
| Recall | 31 Oct 2024 | 24V813000 | An inverted cooktop flame increases the risk of injury or fire. |
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 Creek Side line page.