Keystone Retreat 391MKTS
Travel trailerbuilt 2020–25Mixed build tierCommon on the used market
WHAT ONE COSTS
$41,200est. used (2025, 1 yr old)
Sticker was $54,489 in 2023. Out of production since 2025, so the used market is the only way to buy one. Estimate assumes a 2025 unit.
WHAT IT WEIGHS BEHIND YOUR TRUCK
~13,062 lbestimated as towed, for 2 people
dry weight 11,820 lb + fresh water (53 gal, full) 442 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 around14,515 lb (10% margin)
GVWR (the sticker maximum)13,925 lb
Tongue weight, loaded~2,127 lb (16%: high, eats payload)
Cargo capacity2,105 lb
WHICH TOW VEHICLES IT FITS: 19 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 391MKTS's published weights held steady.
The 76it doesn't fit
- Chevrolet Colorado / GMC Canyon (2.7 Turbo HO, tow pkg) '23-26: over by ~6,132 lb loaded
- Chevrolet Colorado / GMC Canyon (2.8 Duramax) '15-22: over by ~6,132 lb loaded
- Chevrolet Silverado / GMC Sierra 1500 (6.2 V8, max tow) '19-26: over by ~1,092 lb loaded
- Chevrolet Silverado 1500 (max tow) '14-18: over by ~1,812 lb loaded
- Chevrolet Silverado EV (4WT) '24-26: over by ~1,812 lb loaded
- Chevrolet Suburban (5.3 V8, max tow) '21-26: over by ~5,592 lb loaded
- Chevrolet Tahoe (5.3 V8, max tow) '21-26: over by ~5,502 lb loaded
- Chevrolet Traverse (tow pkg) '18-26: over by ~8,562 lb loaded
- Chrysler Pacifica '17-26: over by ~9,822 lb loaded
- Dodge Durango (5.7 / 6.4 Hemi, tow pkg) '14-26: over by ~5,232 lb loaded
- Ford Bronco 4-dr (2.7 EcoBoost, tow pkg) '21-26: over by ~9,012 lb loaded
- Ford Expedition (3.5 EcoBoost, tow pkg) '25-26: over by ~4,422 lb loaded
- Ford Expedition (3.5 EcoBoost, tow pkg) '18-24: over by ~4,692 lb loaded
- Ford Explorer (3.0 EcoBoost, tow pkg) '20-26: over by ~8,022 lb loaded
- Ford F-150 (3.5 EcoBoost, max tow) '24-26: over by ~912 lb loaded
- Ford F-150 (3.5 EcoBoost, max tow) '15-20: over by ~1,182 lb loaded
- Ford F-150 (3.5 EcoBoost, max tow) '21-23: over by ~462 lb loaded
- Ford F-150 (3.5 EcoBoost, max tow) '11-14: over by ~2,892 lb loaded
- Ford F-150 Lightning (max trailer tow) '22-26: over by ~4,062 lb loaded
- Ford Maverick (2.0 EcoBoost, 4K tow pkg) '22-26: over by ~9,462 lb loaded
- Ford Ranger (2.3 EcoBoost, tow pkg) '19-23: over by ~6,312 lb loaded
- Ford Ranger (2.7 EcoBoost, tow pkg) '24-26: over by ~6,312 lb loaded
- Ford Transit (HD tow pkg) '15-26: over by ~6,852 lb loaded
- GMC Acadia (tow pkg) '20-26: over by ~8,562 lb loaded
- GMC Hummer EV Pickup '22-26: over by ~6,312 lb loaded
- GMC Sierra EV '24-26: over by ~2,262 lb loaded
- GMC Yukon / Yukon XL (5.3 V8, max tow) '21-26: over by ~5,502 lb loaded
- Honda Odyssey '18-26: over by ~9,912 lb loaded
- Honda Passport (AWD) '19-26: over by ~8,562 lb loaded
- Honda Pilot (AWD, tow pkg) '16-26: over by ~8,562 lb loaded
- Honda Ridgeline (AWD) '17-26: over by ~8,562 lb loaded
- Hyundai Palisade (tow pkg) '20-26: over by ~8,562 lb loaded
- Hyundai Santa Cruz (2.5T AWD) '22-26: over by ~8,562 lb loaded
- Jeep Gladiator (3.6 V6, max tow) '20-26: over by ~6,132 lb loaded
- Jeep Grand Cherokee (5.7 Hemi) '11-21: over by ~6,582 lb loaded
- Jeep Grand Cherokee (WL, tow pkg) '22-26: over by ~7,482 lb loaded
- Jeep Grand Cherokee L (5.7 Hemi) '21-26: over by ~6,582 lb loaded
- Jeep Grand Wagoneer (Hurricane, max tow) '22-26: over by ~4,197 lb loaded
- Jeep Wagoneer (Hurricane, max tow) '22-26: over by ~4,062 lb loaded
- Jeep Wrangler Unlimited 4-dr (tow pkg) '18-26: over by ~9,912 lb loaded
- Kia Telluride (tow pkg) '20-26: over by ~8,112 lb loaded
- Land Rover Defender '20-26: over by ~5,682 lb loaded
- Land Rover Discovery '17-26: over by ~5,682 lb loaded
- Lexus GX 550 (tow pkg) '24-26: over by ~4,877 lb loaded
- Lexus LX 600 '22-26: over by ~5,862 lb loaded
- Mazda CX-90 (3.3 turbo, tow pkg) '24-26: over by ~8,562 lb loaded
- Mercedes-Benz Sprinter '19-26: over by ~6,312 lb loaded
- Nissan Armada (3.5 twin-turbo, tow pkg) '25-26: over by ~5,412 lb loaded
- Nissan Armada (tow pkg) '17-24: over by ~5,412 lb loaded
- Nissan Frontier (3.8 V6, tow pkg) '22-26: over by ~6,627 lb loaded
- Nissan Pathfinder (tow pkg) '22-26: over by ~7,662 lb loaded
- Nissan Titan (5.6 V8, tow pkg) '17-24: over by ~4,277 lb loaded
- Nissan Titan XD (Cummins diesel) '16-19: over by ~1,622 lb loaded
- Ram 1500 (3.0 Hurricane, max tow) '25-26: over by ~2,612 lb loaded
- Ram 1500 (5.7 Hemi eTorque, max tow) '19-24: over by ~1,587 lb loaded
- Ram 1500 (5.7 Hemi, max tow) '11-18: over by ~3,502 lb loaded
- Ram ProMaster '14-26: over by ~6,842 lb loaded
- Rivian R1S '22-26: over by ~6,132 lb loaded
- Rivian R1T '22-26: over by ~3,162 lb loaded
- Subaru Ascent '19-26: over by ~8,562 lb loaded
- Subaru Outback (XT / Wilderness) '20-26: over by ~9,912 lb loaded
- Tesla Cybertruck '24-26: over by ~3,162 lb loaded
- Tesla Model X (tow pkg) '16-26: over by ~8,562 lb loaded
- Tesla Model Y (tow pkg) '21-26: over by ~9,912 lb loaded
- Toyota 4Runner (4.0 V6) '11-24: over by ~8,562 lb loaded
- Toyota 4Runner (i-Force Max) '25-26: over by ~7,662 lb loaded
- Toyota Grand Highlander (i-Force Max) '24-26: over by ~8,562 lb loaded
- Toyota Highlander (tow pkg) '20-26: over by ~8,562 lb loaded
- Toyota Land Cruiser (i-Force Max) '24-26: over by ~7,662 lb loaded
- Toyota Sequoia (i-Force Max, tow pkg) '23-26: over by ~4,492 lb loaded
- Toyota Sienna '21-26: over by ~9,912 lb loaded
- Toyota Tacoma (i-Force Max, tow pkg) '24-26: over by ~7,212 lb loaded
- Toyota Tacoma (V6, tow pkg) '16-23: over by ~6,942 lb loaded
- Toyota Tundra (5.7 V8, tow pkg) '11-21: over by ~3,882 lb loaded
- Toyota Tundra (i-Force Max, tow pkg) '22-26: over by ~2,262 lb loaded
- Volkswagen Atlas (tow pkg) '18-26: over by ~8,562 lb loaded
These verdicts assume 2 people aboard with typical gear. See the margin for your truck and your crew →
THE SPECS
Length40.7 ft
Height (incl. A/C)12.6 ft
Width8.5 ft
GVWR13,925 lb
Dry weight11,820 lb
Dry tongue weight1,925 lb
Cargo capacity2,105 lb
Sleeps4
Slide-outs3
Axles2
Fresh water53 gal
Grey water71 gal
Black water39 gal
Air conditioning15,000 BTU
A missing row means the maker never published that figure: unknown, not zero.
WHERE PEOPLE SLEEP
- 1× King bed(Permanent)72×80
- 1× 72-inch sleeper sofa(Convertible)—
- 1× Theater seating(Convertible)—
HOW IT'S BUILT: 2/5
WallsLaminated fiberglass
FrameWood
RoofStandard
UnderbellyEnclosed
Keystone (Mixed tier): Retreat Destination Trailer
YEAR BY YEAR: WHAT CHANGED
- 2020Introduced
FINDING ONE
Common: usually several for sale within a day’s drive. Why: Keystone is a volume manufacturer. Estimated from build volume and production span, not a count of live listings.
OUR TAKE
Laminated-sidewall mid-kitchen plan.
OTHER RETREAT FLOORPLANS
391CLDL · 15,790 lb · sleeps 9391FDEN · 13,200 lb · sleeps 4391FKSS · 13,350 lb · sleeps 4391FLFT · 14,000 lb · sleeps 7391FLRS · 13,400 lb · sleeps 4391FLSL · 15,655 lb · sleeps 6391FSRL · 15,700 lb · sleeps 8391HBDL · 15,655 lb · sleeps 9391LOFT · 13,925 lb · sleeps 6391MBNK · 13,190 lb · sleeps 7391RDEN · 13,470 lb · sleeps 6391RS · 15,655 lb · sleeps 439CLDL · 15,772 lb · sleeps 939FDEN · 13,200 lb · sleeps 4the whole line →
Find one for sale
Live listings for the 391MKTS on the big marketplaces. Each search opens pre-filled with this exact floorplan:
Inventory varies by site and day. Slim pickings? search the whole Retreat line ↗
Is the 391MKTS 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 dealer and aggregator listings, retrieved 2026-07.