01 What makes the 2023 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 2023 record has dry weight 5,185 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 1,315 lbs, between 1,275 lbs (2025) and 1,415 lbs (2026); dry tongue weight 585 lbs, between 535 lbs (2024) and 615 lbs (2026); the longest exterior length, 26' 0" (level with 2024).
Against the 2024 21MML, the next model year on this site, 5 of the 18 fields both records publish differ: dry weight 5,185 lbs to 5,110 lbs (-75 lb); cargo capacity 1,315 lbs to 1,390 lbs (+75 lb); dry tongue weight 585 lbs to 535 lbs (-50 lb); exterior height 10' 2" to 10' 1" (-1 in); height with A/C 10' 9" to 10' 8" (-1 in).
Among the 9 Jayco Jay Feather travel trailers with a 2023 page on this site, the 21MML is 2nd lightest of 9 by dry weight; 2nd lowest of 9 by GVWR; 4th smallest of 9 by cargo capacity; 2nd shortest of 9 by exterior length. By dry weight, the lightest is the 19MRK at 4,795 lbs and the heaviest is the 30QB at 7,265 lbs.
02 Full 2023 specifications
Dimensions
- Exterior length
- 26' 0"
- Exterior width
- 8' 0"
- Width, slides out
- Not published
- Exterior height
- 10' 2"
- Exterior height (w/ A/C)
- 10' 9"
- Interior height (main)
- 6' 6"
Weights
- Dry / unit base weight (UVW)
- 5,185 lbs
- GVWR (max loaded)
- 6,500 lbs
- Net cargo / payload (CCC)
- 1,315 lbs
- Dry tongue weight
- 585 lbs
Running gear
- Tire size
- ST205/75R14'D'
- Hitch type
- Bumper pull (weight-distribution recommended)
- Model year of record
- 2023
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
- Not published
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 2023 model year
2023 is the earliest model year of the 21MML on this site, so there is no earlier record to set it against. Section 01 compares it with 2024.
| 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 2023 model page for this floorplan (how sources are handled).
Fields Jayco does not publish for 2023
For this model year the factory record has no width with slides out, auto-ignition furnace and sleeping count. Those rows read “Not published” and are not filled in from another year.
04 Buying a 2023 21MML at 3 model years old
Its age, and the date on its label
A 2023 21MML is 3 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 2023 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 2023
No recall campaign or owner complaint filed under the Jayco Jay Feather name for model year 2023 appears on Jayco Jay Feather year by year. An empty record is not a clean year.
05 How it compares — and to its other years
Differs from 2023 on 5 of 18 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), 35% of the 21MML’s 1,315 lb cargo capacity, leaving 856 lb. 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
| 2023 travel trailers from other lines, nearest by GVWR | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| 21MML | 6,500 | 5,185 | — | 26 ft 0 in |
| Jay Flight 274BH | 6,500 | 5,265 | 9 | 30 ft 7 in |
| White Hawk 27RB | 8,200 | 6,735 | 6 | 32 ft 10 in |
| Eagle 320FBOK | 10,900 | 8,900 | 6 | 38 ft 0 in |
Against the 2023 21MML: the 2023 Jay Flight 274BH is 5 ft longer; the 2023 White Hawk 27RB is 1,700 lb heavier and 7 ft longer; the 2023 Eagle 320FBOK is 4,400 lb heavier and 12 ft longer.
08 Common questions about the 21MML
How much does the 21MML weigh?
5,185 lb dry; 6,500 lb GVWR, the most it may weigh loaded.
How much can the 21MML carry?
1,315 lb, 20% 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?
585 lb dry, 11% 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.
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 2023 21MML differ from other model years?
Set against the published 2024 21MML record, 3 figures differ: dry weight 5,185 lb in 2023 against 5,110 lb in 2024; cargo capacity 1,315 lb in 2023 against 1,390 lb in 2024; dry hitch weight 585 lb in 2023 against 535 lb in 2024. 5 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
12 of the 18 fields this catalogue tracks are published for the 21MML. Not published: sleeps, 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.