01 What makes it unique
Coachmen lists the 2026 Adrenaline 21 LT at 6,098 lb dry, a GVWR of 9,735 lb and a net carrying capacity of 3,637 lb. It prints no tongue weight for it. Its dry weight plus its carrying capacity comes to exactly its GVWR.
It is 27'-5" long and 11'-5" high. Coachmen prints its tanks as 98 gal fresh, 70 gal grey, 35 gal black.
Among the 6 Adrenaline floorplans Coachmen’s Adrenaline brochure (filed in Coachmen’s /brochures/2026/ folder; the brochure prints no year) lists with a published dry weight, it is number 2 from the lightest, in a range from 5,270 lb (Adrenaline 18 LT) to 9,033 lb (Adrenaline 30 GS). Every figure in that comparison is Coachmen’s, for the same model year.
Every number on this page was read on 6 Nov 2026 from Coachmen’s Adrenaline brochure (filed in Coachmen’s /brochures/2026/ folder; the brochure prints no year); model year 2026 comes from where the maker files it on its own site, not from the document’s text.
How the Adrenaline 21 LT differs from the other five Adrenaline floorplans. Most distinctive first. How these ranks are worked out.
- Cargo capacity as a share of GVWR, 37.4%: largest of four; next is the Adrenaline 27 LT (35.3%).
- Grey tank, 70 gal: largest of six; next is the GS (65 gal).
- Dry weight, 6,098 lb: second-lightest of six, between the Adrenaline 18 LT (5,270 lb) and the Adrenaline 27 LT (6,790 lb).
- GVWR, 9,735 lb: second-lowest of six, between the Adrenaline 18 LT (9,192 lb) and the Adrenaline 27 LT (10,500 lb).
- Length, 27 ft: second-shortest of six, between the Adrenaline 18 LT (24 ft) and the Adrenaline 27 LT and KB (32 ft).
- Cargo capacity, 3,637 lb: third-smallest of six, between the KB (3,512 lb) and the Adrenaline 27 LT (3,710 lb).
- Exterior height, 11 ft: lowest of six, level with the Adrenaline 18 LT and Adrenaline 27 LT; next are the GS, KB and SS (12 ft).
- Interior height, 7 ft 1 in: lowest of six, level with the Adrenaline 18 LT and Adrenaline 27 LT; next are the GS, KB and SS (7 ft 7 in).
Next to the Adrenaline 18 LT, the nearest lighter floorplan by dry weight, the Adrenaline 21 LT is 828 lb heavier by dry weight, has a GVWR 543 lb higher, has 345 lb less cargo capacity, is 3 ft longer and has a grey tank 35 gal larger; the two publish the same exterior height, interior height, fresh tank and black tank.
Next to the Adrenaline 27 LT, the nearest heavier floorplan by dry weight, the Adrenaline 21 LT is 692 lb lighter by dry weight, has a GVWR 765 lb lower, has 73 lb less cargo capacity, is 5 ft shorter and has a grey tank 35 gal larger; the two publish the same exterior height, interior height, fresh tank and black tank.
02 Full specifications
Dimensions
- Exterior length
- 27'-5"
- Exterior height
- 11'-5"
- Exterior width
- Not published by Coachmen
- Interior height
- 85"
Weights
- Dry / unit base weight (UVW)
- 6,098 lb
- GVWR (max loaded)
- 9,735 lb
- Net cargo / payload (CCC)
- 3,637 lb
- Hitch / tongue weight
- Not published by Coachmen
Capacities
- Fresh water
- 98 gal
- Grey water
- 70 gal
- Black water
- 35 gal
Running gear
- Hitch type
- Bumper pull
- Tire size
- Not published by Coachmen
Sleeping & layout
- Sleeps
- Not published by Coachmen
- Shipping Weight (lbs.) (as printed; not UVW)
- 6,038
- Hitch Height (as printed)
- 935 (the row is labelled "Hitch Height" and prints weight-sized figures with no unit; not used as hitch weight)
- Garage Length (as printed)
- 13'-8"
- Model year source
- The brochure prints no model year; the maker files it in its own /brochures/2026/ folder.
- Weight basis (as printed)
- GVWR definition printed on the spec page; no estimate footnote on this page.
- Awning
- 19'
- Wheel size
- 15 x 6; 6 - 5.5
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
Weight budget
Size (no width published)
Holding tanks
Axles, wheels and nose shape are schematic; not a floorplan. Data: dataset.
03 The Adrenaline floorplan family
Coachmen’s Adrenaline brochure (filed in Coachmen’s /brochures/2026/ folder; the brochure prints no year) lists 6 Adrenaline floorplans; every one with a printed weight has a page here.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| Adrenaline 18 LT | 24'-6" | — | Profiled |
| Adrenaline 21 LT | 27'-5" | — | Profiled |
| Adrenaline 27 LT | 32'-11" | — | Profiled |
| Adrenaline 27 KB | 32'-11" | — | Profiled |
| Adrenaline 29 SS | 36'-4" | — | Profiled |
| Adrenaline 30 GS | 37'-6" | — | Profiled |
Coachmen’s Adrenaline brochure (filed in Coachmen’s /brochures/2026/ folder; the brochure prints no year) lists 6 Adrenaline floorplans. Every one with a printed weight has a page here.
04 Notes on this floorplan
What Coachmen does not publish for the Adrenaline 21 LT
Coachmen prints no tongue weight, tire size, 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
5,270 lb dry and 9,192 lb GVWR, against this model’s 6,098 lb and 9,735 lb.
6,790 lb dry and 10,500 lb GVWR, against this model’s 6,098 lb and 9,735 lb.
06 Loading it for a trip
A full 98-gallon fresh tank is about 813 lb of water (water counts as cargo: 49 CFR 571.110 S9.3.2), 22% of the Adrenaline 21 LT’s 3,637 lb cargo capacity, leaving 2,824 lb. Across 6 Adrenaline floorplans the water share runs 20% to 23%, and 2 give up more than this one. Nearest on that share: Adrenaline 27 LT at 22% and Adrenaline 27 KB at 23%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.110 S9.3.3).
No source publishes a tongue weight for the Adrenaline 21 LT, so its hitch load has to come from a scale ticket taken with the trailer hitched.
07 Where this floorplan sits
Closest sibling: the Adrenaline 27 LT, nearest on the published figures. It differs on 5 of the 7 fields both publish (this plan first): length 27 ft 0 in vs 32 ft 0 in; dry weight 6,098 lb vs 6,790 lb; GVWR 9,735 lb vs 10,500 lb; cargo capacity 3,637 lb vs 3,710 lb; grey tank 70 gal vs 35 gal. They match on fresh tank and black tank.
| Adrenaline plans | This plan | Position, low to high | Range |
|---|---|---|---|
| GVWR (lb) | 9,735 | 2 of 6 | 9,192–12,500 |
| Dry weight (lb) | 6,098 | 2 of 6 | 5,270–9,033 |
| Cargo capacity (lb) | 3,637 | 3 of 6 | 3,466–3,982 |
| Length | 27 ft 0 in | 2 of 6 | 24 ft 0 in–37 ft 0 in |
| Grey tank (gal) | 70 | 6 of 6 | 35–70 |
Either side of it by GVWR: Adrenaline 18 LT is 543 lb lighter (9,192 lb GVWR); Adrenaline 27 LT is 765 lb heavier (10,500 lb GVWR).
| Nearest Adrenaline siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| Adrenaline 21 LT | 27 ft 0 in | — | 6,098 | 9,735 | 3,637 | — | 98 |
| Adrenaline 27 LT | 32 ft 0 in | — | 6,790 | 10,500 | 3,710 | — | 98 |
| Adrenaline 18 LT | 24 ft 0 in | — | 5,270 | 9,192 | 3,982 | — | 98 |
| Adrenaline 30 GS | 37 ft 0 in | — | 9,033 | 12,500 | 3,466 | — | 98 |
| Adrenaline 27 KB | 32 ft 0 in | — | 7,488 | 11,000 | 3,512 | — | 98 |
| Adrenaline 29 SS | 36 ft 0 in | — | 8,642 | 12,500 | 3,858 | — | 98 |
All 6 Adrenaline floorplans: Adrenaline line hub.
| Other lines, nearest by GVWR | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| Adrenaline 21 LT | 9,735 | 6,098 | — | 27 ft 0 in |
| Mesa Ridge Limited MR312BHS | 9,735 | 7,965 | — | 37 ft 1 in |
| Ozark 2500THK | 9,735 | 5,493 | — | 28 ft 11 in |
| Work and Play 21LT | 9,735 | 6,098 | — | 27 ft 5 in |
| Coachmen Catalina 303RKDS | 9,734 | 8,234 | 4 | 36 ft 5 in |
| Avenir 32BH | 9,736 | 7,192 | — | 36 ft 4 in |
| Viking 282DORM | 9,730 | 7,208 | — | 36 ft 11 in |
Against the Adrenaline 21 LT: the Mesa Ridge Limited MR312BHS is 10 ft longer; the Ozark 2500THK is 2 ft longer.
08 Common questions about the Adrenaline 21 LT
How much does the Adrenaline 21 LT weigh?
6,098 lb dry; 9,735 lb GVWR, the most it may weigh loaded.
How much can the Adrenaline 21 LT carry?
3,637 lb, 37% of its GVWR (median across 1,416 travel trailers here: 23%). A full fresh tank uses 813 lb of it.
What size tow vehicle does the Adrenaline 21 LT need?
A tow rating of at least 9,735 lb, plus payload for the loaded tongue weight, passengers and cargo.
What are the tank capacities on the Adrenaline 21 LT?
Fresh 98, grey 70, black 35 gallons. Off hookups, fresh water runs out first.
How long is the Adrenaline 21 LT?
27'-5" 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 Adrenaline 21 LT. Not published: hitch weight, exterior width, sleeps, slide count, axle count, tire specification, refrigerator, air conditioning.
Sourcing rules: methodology.
10 Manuals & documents
Sources: forestriverinc.com, coachmenrv.com (linked below); the full source note is at the foot of the page.
11 NHTSA safety record
NHTSA holds 9 recall campaigns and 1 owner complaint (model years 2005 on) against the Coachmen Adrenaline line (a recall and a complaint are not the same thing).
Too few reports to show a pattern. 1 complaint has been filed on this line — not enough to say what fails most often. It covers electrical system.
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 Coachmen Adrenaline line page.