01 What makes the 2024 21MML different
The Jay Feather 21MML is one of Jayco's Jay Feather travel trailers, the lightweight step-up line positioned above the value Jay Flight SLX and below the premium Eagle HT.
Across the 5 model years of the 21MML on this site (2023 to 2027), the 2024 record has dry weight 5,110 lbs, between 5,085 lbs (2026) and 5,225 lbs (2025); the same GVWR as every other year that publishes one (6,500 lbs); cargo capacity 1,390 lbs, between 1,275 lbs (2025) and 1,415 lbs (2026); the lightest dry tongue weight, 535 lbs; the longest exterior length, 26' 0" (level with 2023).
Against the 2025 21MML, the next model year on this site, 7 of the 20 fields both records publish differ: dry weight 5,110 lbs to 5,225 lbs (+115 lb); cargo capacity 1,390 lbs to 1,275 lbs (-115 lb); dry tongue weight 535 lbs to 600 lbs (+65 lb); exterior length 26' 0" to 25' 5" (-7 in); exterior height 10' 1" to 10' 2" (+1 in); grey tank 30.5 gal to 30.0 gal (-0.5 gal); black tank 30.5 gal to 30.0 gal (-0.5 gal).
Among the 11 Jayco Jay Feather travel trailers with a 2024 page on this site, the 21MML is 2nd lightest of 11 by dry weight; 2nd lowest of 11 by GVWR; joint 2nd smallest of 11 by cargo capacity; 2nd shortest of 11 by exterior length. By dry weight, the lightest is the 19MRK at 4,775 lbs and the heaviest is the 29QBH at 6,970 lbs.
02 Full 2024 specifications
Dimensions
- Exterior length
- 26' 0"
- Exterior width
- 8' 0"
- Width, slides out
- 9' 10"
- Exterior height
- 10' 1"
- Exterior height (w/ A/C)
- 10' 8"
- Interior height (main)
- 6' 6"
Weights
- Dry / unit base weight (UVW)
- 5,110 lbs
- GVWR (max loaded)
- 6,500 lbs
- Net cargo / payload (CCC)
- 1,390 lbs
- Dry tongue weight
- 535 lbs
Running gear
- Tire size
- ST205/75R14'D'
- Hitch type
- Bumper pull (weight-distribution recommended)
- Model year of record
- 2024
Capacities
- Fresh water
- 55.0 gal
- Grey water
- 30.5 gal
- Black water
- 30.5 gal
- LP / propane
- 40 lbs
- LP / propane, optional
- 60 lbs
Galley & systems
- Water heater
- Tankless
- Furnace output
- 35000 BTU
- Furnace, auto-ignition
- Not published
- Outside storage compartments
- 2
Sleeping
- Sleeps
- up to 3
Drawn to scale
Weight budget
Size, with end view
Holding tanks
Axles, wheels and nose shape are schematic; not a floorplan. Data: dataset.
Towing it
Loaded range: 10–15% of GVWR on the tongue, a rule of thumb, not a measurement of this unit. No truck ratings or hitch classes (why; NHTSA, DOT HS 809 433).
03 What changed for the 2024 model year
Between the 2023 and 2024 21MML, 5 of the 18 fields both records publish differ: dry weight, cargo capacity, dry tongue weight, exterior height and height with A/C. The other 13 match, including GVWR.
| Field | 2023 | 2024 | Change |
|---|---|---|---|
| Dry / unit base weight (UVW) | 5,185 lbs | 5,110 lbs | -75 lb |
| Net cargo / payload (CCC) | 1,315 lbs | 1,390 lbs | +75 lb |
| Dry tongue weight | 585 lbs | 535 lbs | -50 lb |
| Exterior height | 10' 2" | 10' 1" | -1 in |
| Exterior height (w/ A/C) | 10' 9" | 10' 8" | -1 in |
Published for one of the two years only: width with slides out (2024: 9' 10"); sleeping count (2024: up to 3).
| Model year | Dry (UVW) | GVWR | Dry tongue | Sleeps | Tire size |
|---|---|---|---|---|---|
| 2023 | 5,185 | 6,500 | 585 | Not published | ST205/75R14'D' |
| 2024 | 5,110 | 6,500 | 535 | 3 | ST205/75R14'D' |
| 2025 | 5,225 | 6,500 | 600 | 3 | ST205/75R14'D' |
| 2026 | 5,085 | 6,500 | 615 | 3 | ST205/75R14'D' |
| 2027 | 5,095 | 6,500 | 580 | 3 | ST205/75R14'D' |
All years side by side: the Jayco Jay Feather 21MML parent page.
Where these numbers come from
Every figure on this page is read from Jayco's own 2024 model page for this floorplan (how sources are handled).
Fields Jayco does not publish for 2024
For this model year the factory record has no auto-ignition furnace. Those rows read “Not published” and are not filled in from another year.
04 Buying a 2024 21MML at 2 model years old
Its age, and the date on its label
A 2024 21MML is 2 model years old in 2026. Its build month is on the certification label (49 CFR 567.4(g)(2)), not in the model year.
Tires: size and date code
Jayco lists ST205/75R14'D' as the 2024 factory tire size. Read the four-digit date code at the end of each tire's identification number, spare included (49 CFR 574.5(b)(3)).
NHTSA record for model year 2024
For model year 2024, NHTSA's files hold 1 recall campaign under the Jayco Jay Feather name (see Jayco Jay Feather year by year). Campaigns by component: Tires (24V435000). They are filed against the line, not this floorplan alone.
05 How it compares — and to its other years
Differs from 2024 on 5 of 18 shared fields, dry weight, cargo capacity and dry tongue weight among them.
Differs from 2024 on 7 of 20 shared fields, dry weight, cargo capacity and dry tongue weight among them.
06 Loading it for a trip
A full 55-gallon fresh tank is about 459 lb of water (water counts as cargo: 49 CFR 571.110 S9.3.2), 33% of the 21MML’s 1,390 lb cargo capacity, leaving 931 lb (310 lb per rated berth). Your own unit’s figure is on the label inside its entry door (49 CFR 571.110 S9.3.3).
07 Where this floorplan sits
| 2024 travel trailers from other lines, nearest by GVWR | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| 21MML | 6,500 | 5,110 | 3 | 26 ft 0 in |
| Jay Flight 260BH | 6,500 | 4,580 | 10 | 29 ft 5 in |
| White Hawk 25MBH | 7,500 | 6,195 | 8 | 30 ft 8 in |
| Eagle 295RUCD | 10,250 | 8,282 | 6 | 33 ft 10 in |
| Outback 328RL | 10,500 | 8,791 | 6 | 37 ft 7 in |
Against the 2024 21MML: the 2024 Jay Flight 260BH is 3 ft longer and sleeps 7 more; the 2024 White Hawk 25MBH is 1,000 lb heavier and 5 ft longer and sleeps 5 more; the 2024 Eagle 295RUCD is 3,750 lb heavier and 8 ft longer and sleeps 3 more.
08 Common questions about the 21MML
How much does the 21MML weigh?
5,110 lb dry; 6,500 lb GVWR, the most it may weigh loaded.
How much can the 21MML carry?
1,390 lb, 21% of its GVWR (median across 958 travel trailers here: 23%). A full fresh tank uses 459 lb of it.
What is the tongue weight of the 21MML?
535 lb dry, 10% of the dry weight (median across 1,156 travel trailers here: 12%).
What size tow vehicle does the 21MML need?
A tow rating of at least 6,500 lb, plus payload for the loaded tongue weight, passengers and cargo.
How many people does the 21MML sleep?
It is rated to sleep 3.
What are the tank capacities on the 21MML?
Fresh 55, grey 30, black 30 gallons. Off hookups, fresh water runs out first.
How long is the 21MML?
26' 0" overall, tongue or pin box included.
How does the 2024 21MML differ from other model years?
Set against the published 2025 21MML record, 6 figures differ: dry weight 5,110 lb in 2024 against 5,225 lb in 2025; cargo capacity 1,390 lb in 2024 against 1,275 lb in 2025; dry hitch weight 535 lb in 2024 against 600 lb in 2025; grey tank 30 gal in 2024 against 30 gal in 2025; black tank 30 gal in 2024 against 30 gal in 2025; exterior length 26 ft 0 in in 2024 against 25 ft 5 in in 2025. 3 other figures both years publish are identical. This floorplan is profiled for 5 model years here (2023 to 2027).
From the figures above.
09 What this page publishes, and what it does not
13 of the 18 fields this catalogue tracks are published for the 21MML. Not published: slide count, axle count, awning, refrigerator, air conditioning.
Sourcing rules: methodology.
10 Manuals & documents
Sources: jayco.com (linked below); the full source note is at the foot of the page.
11 NHTSA safety record
NHTSA holds 23 recall campaigns and 39 owner complaints against the Jay Feather line. They are counted separately: a recall is a confirmed defect with a remedy, a complaint one owner’s unverified account.
What to look at on a used one. Across the 39 complaints filed on this line the most-reported components are structure (21%), equipment (15%) and tires (15%).
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 Jay Feather line page.