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KZ Durango G388FLS

Fifth wheelbuilt 2025– (in production)Better build tierFindable on the used market
WHAT ONE COSTS
$129,000est. MSRP (from 26 priced floorplans of this line)

Still in production. A used 2023 would run roughly $76,100.

WHAT IT WEIGHS BEHIND YOUR TRUCK
~16,764 lbestimated as towed, for 2 people

dry weight 15,330 lb + fresh water (76 gal, full) 634 lb + propane + battery 200 lb + gear for 2 600 lb. Brochure dry weight omits water, propane, batteries and your gear; this estimate doesn't.

You want a tow rating around18,630 lb (10% margin)
GVWR (the sticker maximum)17,995 lb
Tongue weight, loaded~3,401 lb (20%)
Cargo capacity2,665 lb
WHICH TOW VEHICLES IT FITS: 14 OF 95

Judged the way the app judges: estimated loaded weight against each vehicle's rating less a 10% margin, per model year, because the G388FLS's published weights held steady. Fifth wheels also need a pickup bed and are held to the fifth-wheel rating where published.

VEHICLETOW RATINGVERDICT
Chevrolet Silverado / GMC Sierra 2500HD (Duramax, max tow) '24-2622,500 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '20-2636,000 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '11-1923,300 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, gooseneck) '20-2222,800 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 HO diesel, gooseneck) '23-2623,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '17-1932,500 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '20-2237,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '11-1621,600 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2638,000 lbfits, loaded, with 10% margin
Ford F-450 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2640,000 lbfits, loaded, with 10% margin
Ram 2500 (6.7 Cummins HO) '19-2620,000 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins DRW, gooseneck) '13-1831,210 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '25-2636,610 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '19-2437,090 lbfits, loaded, with 10% margin
The 81it doesn't fit

These verdicts assume 2 people aboard with typical gear. See the margin for your truck and your crew →

THE SPECS
Length42.9 ft
Height (incl. A/C)13.5 ft
Width8.4 ft
Interior height6.7 ft
GVWR17,995 lb
Dry weight15,330 lb
Dry tongue weight3,110 lb
Cargo capacity2,665 lb
Sleeps6
Axles2
Fresh water76 gal
Grey water90 gal
Black water50 gal
Air conditioning45,000 BTU
Solar (standard)400 W
Awning17 ft

A missing row means the maker never published that figure: unknown, not zero.

WHERE PEOPLE SLEEP
  • 1× Rear king bed(Permanent)—
  • 2× Front living-room sofas and recliners(Convertible)—
HOW IT'S BUILT: 5/5
WallsAzdel composite
FrameAluminum
RoofWalk-on
UnderbellyEnclosed

KZ (Better tier): Thor Industries

YEAR BY YEAR: WHAT CHANGED
  • 2025Present in the KZ catalog before the 2026 model year
FINDING ONE

Findable: a few listed nationwide most weeks. Why: KZ is a volume manufacturer; only 2 model years; still in production. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

Front living suite with a guest half bath - highest GVWR in the line at 17,995 lb.

OTHER DURANGO FLOORPLANS
D220RKD · 10,000 lb · sleeps 5D232MLD · 10,500 lb · sleeps 5D240RKD · 11,000 lb · sleeps 5D256RKT · 11,500 lb · sleeps 5D281RKD · 12,995 lb · sleeps 4D283RLT · 11,500 lb · sleeps 5D286BHD · 11,500 lb · sleeps 10D290RLT · 11,995 lb · sleeps 6D296BHT · 11,995 lb · sleeps 9D301RLT · 12,995 lb · sleeps 4D302RLT · 13,500 lb · sleeps 4D321RKT · 12,995 lb · sleeps 4D326RLT · 13,500 lb · sleeps 6D333RLT · 13,700 lb · sleeps 4the whole line →
Find one for sale

Live listings for the G388FLS on the big marketplaces. Each search opens pre-filled with this exact floorplan:

RV Trader ↗Camping World ↗FB Marketplace ↗Google ↗

Inventory varies by site and day. Slim pickings? search the whole Durango line ↗

Is the G388FLS your #1, or just a spec sheet?

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.