KZ Sportster 300THR
dry weight 6,890 lb + fresh water (75 gal, full) 626 lb + propane + battery 200 lb + gear for 2 600 lb. Brochure dry weight omits water, propane, batteries and your gear; this estimate doesn't.
Judged the way the app judges: estimated loaded weight against each vehicle's rating less a 10% margin, per model year, because the 300THR's published weights held steady.
The 53it doesn't fit
- Chevrolet Colorado / GMC Canyon (2.7 Turbo HO, tow pkg) '23-26: over by ~1,386 lb loaded
- Chevrolet Colorado / GMC Canyon (2.8 Duramax) '15-22: over by ~1,386 lb loaded
- Chevrolet Suburban (5.3 V8, max tow) '21-26: over by ~846 lb loaded
- Chevrolet Tahoe (5.3 V8, max tow) '21-26: over by ~756 lb loaded
- Chevrolet Traverse (tow pkg) '18-26: over by ~3,816 lb loaded
- Chrysler Pacifica '17-26: over by ~5,076 lb loaded
- Dodge Durango (5.7 / 6.4 Hemi, tow pkg) '14-26: over by ~486 lb loaded
- Ford Bronco 4-dr (2.7 EcoBoost, tow pkg) '21-26: over by ~4,266 lb loaded
- Ford Explorer (3.0 EcoBoost, tow pkg) '20-26: over by ~3,276 lb loaded
- Ford Maverick (2.0 EcoBoost, 4K tow pkg) '22-26: over by ~4,716 lb loaded
- Ford Ranger (2.3 EcoBoost, tow pkg) '19-23: over by ~1,566 lb loaded
- Ford Ranger (2.7 EcoBoost, tow pkg) '24-26: over by ~1,566 lb loaded
- Ford Transit (HD tow pkg) '15-26: over by ~2,106 lb loaded
- GMC Acadia (tow pkg) '20-26: over by ~3,816 lb loaded
- GMC Hummer EV Pickup '22-26: over by ~1,566 lb loaded
- GMC Yukon / Yukon XL (5.3 V8, max tow) '21-26: over by ~756 lb loaded
- Honda Odyssey '18-26: over by ~5,166 lb loaded
- Honda Passport (AWD) '19-26: over by ~3,816 lb loaded
- Honda Pilot (AWD, tow pkg) '16-26: over by ~3,816 lb loaded
- Honda Ridgeline (AWD) '17-26: over by ~3,816 lb loaded
- Hyundai Palisade (tow pkg) '20-26: over by ~3,816 lb loaded
- Hyundai Santa Cruz (2.5T AWD) '22-26: over by ~3,816 lb loaded
- Jeep Gladiator (3.6 V6, max tow) '20-26: over by ~1,386 lb loaded
- Jeep Grand Cherokee (5.7 Hemi) '11-21: over by ~1,836 lb loaded
- Jeep Grand Cherokee (WL, tow pkg) '22-26: over by ~2,736 lb loaded
- Jeep Grand Cherokee L (5.7 Hemi) '21-26: over by ~1,836 lb loaded
- Jeep Wrangler Unlimited 4-dr (tow pkg) '18-26: over by ~5,166 lb loaded
- Kia Telluride (tow pkg) '20-26: over by ~3,366 lb loaded
- Land Rover Defender '20-26: over by ~936 lb loaded
- Land Rover Discovery '17-26: over by ~936 lb loaded
- Lexus GX 550 (tow pkg) '24-26: over by ~131 lb loaded
- Lexus LX 600 '22-26: over by ~1,116 lb loaded
- Mazda CX-90 (3.3 turbo, tow pkg) '24-26: over by ~3,816 lb loaded
- Mercedes-Benz Sprinter '19-26: over by ~1,566 lb loaded
- Nissan Armada (3.5 twin-turbo, tow pkg) '25-26: over by ~666 lb loaded
- Nissan Armada (tow pkg) '17-24: over by ~666 lb loaded
- Nissan Frontier (3.8 V6, tow pkg) '22-26: over by ~1,881 lb loaded
- Nissan Pathfinder (tow pkg) '22-26: over by ~2,916 lb loaded
- Ram ProMaster '14-26: over by ~2,096 lb loaded
- Rivian R1S '22-26: over by ~1,386 lb loaded
- Subaru Ascent '19-26: over by ~3,816 lb loaded
- Subaru Outback (XT / Wilderness) '20-26: over by ~5,166 lb loaded
- Tesla Model X (tow pkg) '16-26: over by ~3,816 lb loaded
- Tesla Model Y (tow pkg) '21-26: over by ~5,166 lb loaded
- Toyota 4Runner (4.0 V6) '11-24: over by ~3,816 lb loaded
- Toyota 4Runner (i-Force Max) '25-26: over by ~2,916 lb loaded
- Toyota Grand Highlander (i-Force Max) '24-26: over by ~3,816 lb loaded
- Toyota Highlander (tow pkg) '20-26: over by ~3,816 lb loaded
- Toyota Land Cruiser (i-Force Max) '24-26: over by ~2,916 lb loaded
- Toyota Sienna '21-26: over by ~5,166 lb loaded
- Toyota Tacoma (i-Force Max, tow pkg) '24-26: over by ~2,466 lb loaded
- Toyota Tacoma (V6, tow pkg) '16-23: over by ~2,196 lb loaded
- Volkswagen Atlas (tow pkg) '18-26: over by ~3,816 lb loaded
These verdicts assume 2 people aboard with typical gear. See the margin for your truck and your crew →
A missing row means the maker never published that figure: unknown, not zero.
- 1× Front queen bed(Permanent)—
- 2× 72" roll-over sofas in the garage(Convertible)—
KZ (Mixed tier): KZ's toy hauler line (Thor Industries), sold as Sportsmen Sportster through 2016, Sportster/Sportster 100 from 2017, and Sportster X since 2025. Construction is mid-pack for the segment — aluminum-framed laminated fiberglass walls, a 3/8" walk-on roof and a heated, enclosed underbelly — with a Tuff Ply garage floor and diamond-plate wall protection that hold up well. KZ's assembly quality is uneven unit to unit, which is why it lands in the middle rather than at the top.
- 2018Introduced
- 2019Replaced by the 290THR
Findable: a few listed nationwide most weeks. Why: KZ is a volume manufacturer; only one model year. Estimated from build volume and production span, not a count of live listings.
No-slide 33-footer with 15'11" of cargo area — the widest-body Sportster's first year at 102".
Live listings for the 300THR on the big marketplaces. Each search opens pre-filled with this exact floorplan:
Inventory varies by site and day. Slim pickings? search the whole Sportster line ↗
These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about. Set your priorities as sliders, switch on your hard limits, and watch the whole market re-rank around them. Every exclusion explained, every margin shown.
See where it ranks for you →Data compiled from manufacturer spec sheets, retrieved 2026-07.