01 What makes it unique
KZ lists the 2024 Sportster 301THR at 8,220 lb dry, a GVWR of 11,000 lb, a net carrying capacity of 2,780 lb and a tongue weight of 1,380 lb. Its dry weight plus its carrying capacity comes to exactly its GVWR.
It is 35' 10" long and 12' 3" high. KZ prints its tanks as 75 gal fresh, 64 gal grey, 32 gal black.
Among the 5 Sportster floorplans KZ’s 2024 Sportster brochure lists with a published dry weight, it is number 2 from the lightest, in a range from 6,840 lb (Sportster 270THR) to 11,070 lb (Sportster 353TH13). Every figure in that comparison is KZ’s, for the same model year.
Every number on this page was read on 6 Nov 2026 from KZ’s 2024 Sportster brochure, the maker’s own dated document for model year 2024.
How the 301THR differs from the other four Sportster floorplans. Most distinctive first. How these ranks are worked out.
- Cargo capacity, 2,780 lb: smallest of five; next is the 353TH13 (2,925 lb).
- Grey tank, 64 gal: largest of five; next are the 280TH and 353TH13 (50 gal).
- Dry weight, 8,220 lb: second-lightest of five, between the 270THR (6,840 lb) and the 280TH (8,310 lb).
- GVWR, 11,000 lb: second-lowest of five, between the 270THR (10,000 lb) and the 280TH (11,500 lb).
- Cargo capacity as a share of GVWR, 25.3%: third-smallest of five, between the 331TH13 (24.6%) and the 280TH (27.7%).
- Length, 35 ft 10 in: third-shortest of five, between the 280TH (32 ft 6 in) and the 331TH13 (38 ft 6 in).
- Exterior height, 12 ft 3 in: lowest of five, level with the 270THR; next are the 280TH, 331TH13 and 353TH13 (12 ft 7 in).
- Interior height, 7 ft 6 in: lowest of five, level with the 270THR; next are the 280TH, 331TH13 and 353TH13 (7 ft 11 in).
- Sleeping capacity, 8: largest of five, level with the 331TH13; next is the 280TH (7).
Next to the 270THR, the nearest lighter floorplan by dry weight, the 301THR is 1,380 lb heavier by dry weight, has a GVWR 1,000 lb higher, has 380 lb less cargo capacity, has a tongue weight 400 lb heavier, is 5 ft 2 in longer, has a grey tank 32 gal larger and sleeps four more; the two publish the same exterior height, interior height, fresh tank and black tank.
Next to the 280TH, the nearest heavier floorplan by dry weight, the 301THR is 90 lb lighter by dry weight, has a GVWR 500 lb lower, has 410 lb less cargo capacity, is 3 ft 4 in longer, stands 4 in lower, has 5 in less interior height, has a grey tank 14 gal larger, has a black tank 18 gal smaller and sleeps one more; the two publish the same fresh tank.
02 Full specifications
Dimensions
- Exterior length
- 35' 10"
- Exterior height
- 12' 3"
- Exterior width
- 102"
- Interior height
- 90"
Weights
- Dry / unit base weight (UVW)
- 8,220 lb
- GVWR (max loaded)
- 11,000 lb
- Net cargo / payload (CCC)
- 2,780 lb
- Hitch / tongue weight
- 1,380 lb
Capacities
- Fresh water
- 75 gal
- Grey water
- 64 gal
- Black water
- 32 gal
Running gear
- Hitch type
- Bumper pull
- Tire size
- 15"
Sleeping & layout
- Sleeps
- 8
- Dry Axle Weight*
- 6,840
- Refrigerator (cu. feet)
- 8
- Water Heater Cap. (on-demand tankless)
- *** (footnote: "***Infinite supply.")
- LP Gas Cap. (lbs.)
- 40
- Furnace BTUs (1,000s)
- 30
- Weight basis (as printed)
- UVW / Dry Hitch / Dry Axle carry the footnote "*This weight reflects the rolling average unit weight for each model. Your trailer weight will vary according to optional equipment."
- Exterior length note (as printed)
- "**For travel trailers, exterior length is measured from rear of bumper to leading edge of coupler. For fifth wheels, exterior length is measured from rear of bumper to center of coupler."
- Model year source
- Printed in the brochure: "2024 SPORTSTER TRAVEL TRAILER TOY HAULERS" / "2024 SPORTSTER FIFTH WHEEL TOY HAULERS"; KZ files it at kz-rv.com/brochures/2024/.
- Line relationship note
- KZ's archive shows Sportster books 2017-2024 and "Sportster X" from 2025 (sportster-x hub on site). Codes do not overlap the 2027 Sportster X roster (20X, 22X, 26X, 3018X, 33X, 3411X, 3914X). Whether this is a predecessor badge of Sportster X is a naming call, not decided here.
- Awning
- 19'
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, with end view
Holding tanks
Axles, wheels and nose shape are schematic; not a floorplan. Data: dataset.
Towing it
Check your vehicle. Enter the ratings from your owner’s manual and the door-pillar placard.
Compares your figures with this page’s published GVWR (11,000 lb) and the upper loaded tongue estimate (1,650 lb, a rule of thumb). Your vehicle’s placard and the trailer’s own weight label govern.
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). The range starts at the published figure, because loaded is never lighter than that.
03 The Sportster floorplan family
KZ’s 2024 Sportster brochure lists 5 Sportster floorplans; every one with a printed weight has a page here.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| Sportster 270THR | 30' 8" | 4 | Profiled |
| Sportster 301THR | 35' 10" | 8 | Profiled |
| Sportster 280TH | 32' 6" | 7 | Profiled |
| Sportster 331TH13 | 38' 6" | 8 | Profiled |
| Sportster 353TH13 | 40' 6" | 6 | Profiled |
KZ’s 2024 Sportster brochure lists 5 Sportster floorplans. Every one with a printed weight has a page here.
04 Notes on this floorplan
What KZ does not publish for the Sportster 301THR
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
6,840 lb dry and 10,000 lb GVWR, against this model’s 8,220 lb and 11,000 lb.
8,310 lb dry and 11,500 lb GVWR, against this model’s 8,220 lb and 11,000 lb.
06 Loading it for a trip
A full 75-gallon fresh tank is about 622 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 22% of the Sportster 301THR’s 2,780 lb cargo capacity, leaving 2,158 lb (270 lb per rated berth). Across 5 Sportster floorplans the water share runs 19% to 22%, and this plan’s is the highest. Nearest on that share: Sportster 353TH13 at 21%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).
07 Where this floorplan sits
Closest sibling: the Sportster 280TH, nearest on the published figures. It differs on 8 of the 9 fields both publish (this plan first): length 35 ft 10 in vs 32 ft 6 in; sleeps 8 vs 7; dry weight 8,220 lb vs 8,310 lb; GVWR 11,000 lb vs 11,500 lb; cargo capacity 2,780 lb vs 3,190 lb; hitch weight 1,380 lb vs 1,680 lb; grey tank 64 gal vs 50 gal; black tank 32 gal vs 50 gal. They match on fresh tank.
| Sportster plans | This plan | Position, low to high | Range |
|---|---|---|---|
| GVWR (lb) | 11,000 | 2 of 5 | 10,000–13,995 |
| Dry weight (lb) | 8,220 | 2 of 5 | 6,840–11,070 |
| Cargo capacity (lb) | 2,780 | 1 of 5 | 2,780–3,195 |
| Hitch weight (lb) | 1,380 | 2 of 5 | 980–2,640 |
| Length | 35 ft 10 in | 3 of 5 | 30 ft 8 in–40 ft 6 in |
| Grey tank (gal) | 64 | 5 of 5 | 32–64 |
| Black tank (gal) | 32 | 1–3 of 5 | 32–82 |
| Sleeps | 8 | 4–5 of 5 | 4–8 |
Either side of it by GVWR: Sportster 270THR is 1,000 lb lighter (10,000 lb GVWR); Sportster 280TH is 500 lb heavier (11,500 lb GVWR).
| Nearest Sportster siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| Sportster 301THR | 35 ft 10 in | 8 | 8,220 | 11,000 | 2,780 | 1,380 | 75 |
| Sportster 280TH | 32 ft 6 in | 7 | 8,310 | 11,500 | 3,190 | 1,680 | 75 |
| Sportster 331TH13 | 38 ft 6 in | 8 | 9,800 | 12,995 | 3,195 | 2,300 | 75 |
| Sportster 270THR | 30 ft 8 in | 4 | 6,840 | 10,000 | 3,160 | 980 | 75 |
| Sportster 353TH13 | 40 ft 6 in | 6 | 11,070 | 13,995 | 2,925 | 2,640 | 75 |
All 5 Sportster floorplans: Sportster line hub.
| Other lines, nearest by GVWR | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| Sportster 301THR | 11,000 | 8,220 | 8 | 35 ft 10 in |
| Adrenaline 27 KB | 11,000 | 7,488 | — | 32 ft 0 in |
| Domani DM323RL | 11,000 | 9,390 | 4 | 36 ft 11 in |
| Eagle 320FBOK | 11,000 | 9,085 | 6 | 38 ft 0 in |
| Momentum 21G | 11,000 | 7,280 | 6 | 26 ft 11 in |
| Pause 22.4 | 11,000 | 8,904 | — | 26 ft 10 in |
| Sportsmen 344BHK | 11,000 | 9,030 | 11 | 39 ft 4 in |
Against the Sportster 301THR: the Adrenaline 27 KB is 4 ft shorter; the Domani DM323RL is 1 ft longer and sleeps 4 fewer; the Eagle 320FBOK is 2 ft longer and sleeps 2 fewer.
08 Common questions about the Sportster 301THR
How much does the Sportster 301THR weigh?
8,220 lb dry; 11,000 lb GVWR, the most it may weigh loaded.
How much can the Sportster 301THR carry?
2,780 lb, 25% of its GVWR (median across 1,416 travel trailers here: 23%). A full fresh tank uses 622 lb of it.
What is the tongue weight of the Sportster 301THR?
1,380 lb as published, 17% of the dry weight (median across 2,002 travel trailers here: 12%).
What size tow vehicle does the Sportster 301THR need?
A tow rating of at least 11,000 lb, plus payload for the loaded tongue weight, passengers and cargo.
How many people does the Sportster 301THR sleep?
It is rated to sleep 8. No other Sportster floorplan here is rated for more.
What are the tank capacities on the Sportster 301THR?
Fresh 75, grey 64, black 32 gallons. Off hookups, fresh water runs out first.
How long is the Sportster 301THR?
35' 10" overall, tongue or pin box included.
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 Sportster 301THR. Not published: slide count, axle count, refrigerator, air conditioning, tire size (a description is published, a size is not).
Sourcing rules: methodology.
10 Manuals & documents
Sources: kz-rv.com (linked below); the full source note is at the foot of the page.
11 NHTSA safety record
NHTSA holds 9 recall campaigns and 6 owner complaints (model years 2005 on) against the Sportster line (a recall and a complaint are not the same thing).
Too few reports to show a pattern. 6 complaints have been filed on this line — not enough to say what fails most often. They cover tires, latches/locks/linkages, structure and suspension.
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 Sportster line page.