Keystone Retreat 391RS

Name: Keystone Retreat 391RS
Brand: Keystone

Travel trailerbuilt 2025–25Mixed build tierFindable on the used market

WHAT ONE COSTS

$44,900est. used (2025, 1 yr old; from 24 priced floorplans of this line)

WHAT IT WEIGHS BEHIND YOUR TRUCK

15,655 lbno dry weight published: its rating stands in

You want a tow rating around17,395 lb (10% margin)

GVWR (the sticker maximum)15,655 lb

WHICH TOW VEHICLES IT FITS: 18 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 391RS's published weights held steady.

VEHICLE	TOW RATING	VERDICT
Chevrolet Silverado / GMC Sierra 2500HD (Duramax, max tow) '24-26	22,500 lb	fits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '20-23	18,510 lb	fits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '11-19	18,100 lb	fits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '20-26	36,000 lb	fits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '11-19	23,300 lb	fits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, gooseneck) '20-22	22,800 lb	fits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, tow pkg) '17-19	18,000 lb	fits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 HO diesel, gooseneck) '23-26	23,000 lb	fits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '17-19	32,500 lb	fits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '20-22	37,000 lb	fits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '11-16	21,600 lb	fits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 HO diesel DRW, gooseneck) '23-26	38,000 lb	fits, loaded, with 10% margin
Ford F-450 Super Duty (6.7 HO diesel DRW, gooseneck) '23-26	40,000 lb	fits, loaded, with 10% margin
Ram 2500 (6.7 Cummins HO) '19-26	20,000 lb	fits, loaded, with 10% margin
Ram 2500 (6.7 Cummins) '11-18	17,980 lb	fits, loaded, with 10% margin
Ram 3500 (6.7 Cummins DRW, gooseneck) '13-18	31,210 lb	fits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '25-26	36,610 lb	fits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '19-24	37,090 lb	fits, loaded, with 10% margin

The 77it doesn't fit

Chevrolet Colorado / GMC Canyon (2.7 Turbo HO, tow pkg) '23-26: over by ~8,725 lb loaded
Chevrolet Colorado / GMC Canyon (2.8 Duramax) '15-22: over by ~8,725 lb loaded
Chevrolet Silverado / GMC Sierra 1500 (6.2 V8, max tow) '19-26: over by ~3,685 lb loaded
Chevrolet Silverado 1500 (max tow) '14-18: over by ~4,405 lb loaded
Chevrolet Silverado EV (4WT) '24-26: over by ~4,405 lb loaded
Chevrolet Suburban (5.3 V8, max tow) '21-26: over by ~8,185 lb loaded
Chevrolet Tahoe (5.3 V8, max tow) '21-26: over by ~8,095 lb loaded
Chevrolet Traverse (tow pkg) '18-26: over by ~11,155 lb loaded
Chrysler Pacifica '17-26: over by ~12,415 lb loaded
Dodge Durango (5.7 / 6.4 Hemi, tow pkg) '14-26: over by ~7,825 lb loaded
Ford Bronco 4-dr (2.7 EcoBoost, tow pkg) '21-26: over by ~11,605 lb loaded
Ford Expedition (3.5 EcoBoost, tow pkg) '25-26: over by ~7,015 lb loaded
Ford Expedition (3.5 EcoBoost, tow pkg) '18-24: over by ~7,285 lb loaded
Ford Explorer (3.0 EcoBoost, tow pkg) '20-26: over by ~10,615 lb loaded
Ford F-150 (3.5 EcoBoost, max tow) '24-26: over by ~3,505 lb loaded
Ford F-150 (3.5 EcoBoost, max tow) '15-20: over by ~3,775 lb loaded
Ford F-150 (3.5 EcoBoost, max tow) '21-23: over by ~3,055 lb loaded
Ford F-150 (3.5 EcoBoost, max tow) '11-14: over by ~5,485 lb loaded
Ford F-150 Lightning (max trailer tow) '22-26: over by ~6,655 lb loaded
Ford F-250 Super Duty (6.7 diesel) '11-16: over by ~715 lb loaded
Ford Maverick (2.0 EcoBoost, 4K tow pkg) '22-26: over by ~12,055 lb loaded
Ford Ranger (2.3 EcoBoost, tow pkg) '19-23: over by ~8,905 lb loaded
Ford Ranger (2.7 EcoBoost, tow pkg) '24-26: over by ~8,905 lb loaded
Ford Transit (HD tow pkg) '15-26: over by ~9,445 lb loaded
GMC Acadia (tow pkg) '20-26: over by ~11,155 lb loaded
GMC Hummer EV Pickup '22-26: over by ~8,905 lb loaded
GMC Sierra EV '24-26: over by ~4,855 lb loaded
GMC Yukon / Yukon XL (5.3 V8, max tow) '21-26: over by ~8,095 lb loaded
Honda Odyssey '18-26: over by ~12,505 lb loaded
Honda Passport (AWD) '19-26: over by ~11,155 lb loaded
Honda Pilot (AWD, tow pkg) '16-26: over by ~11,155 lb loaded
Honda Ridgeline (AWD) '17-26: over by ~11,155 lb loaded
Hyundai Palisade (tow pkg) '20-26: over by ~11,155 lb loaded
Hyundai Santa Cruz (2.5T AWD) '22-26: over by ~11,155 lb loaded
Jeep Gladiator (3.6 V6, max tow) '20-26: over by ~8,725 lb loaded
Jeep Grand Cherokee (5.7 Hemi) '11-21: over by ~9,175 lb loaded
Jeep Grand Cherokee (WL, tow pkg) '22-26: over by ~10,075 lb loaded
Jeep Grand Cherokee L (5.7 Hemi) '21-26: over by ~9,175 lb loaded
Jeep Grand Wagoneer (Hurricane, max tow) '22-26: over by ~6,790 lb loaded
Jeep Wagoneer (Hurricane, max tow) '22-26: over by ~6,655 lb loaded
Jeep Wrangler Unlimited 4-dr (tow pkg) '18-26: over by ~12,505 lb loaded
Kia Telluride (tow pkg) '20-26: over by ~10,705 lb loaded
Land Rover Defender '20-26: over by ~8,275 lb loaded
Land Rover Discovery '17-26: over by ~8,275 lb loaded
Lexus GX 550 (tow pkg) '24-26: over by ~7,470 lb loaded
Lexus LX 600 '22-26: over by ~8,455 lb loaded
Mazda CX-90 (3.3 turbo, tow pkg) '24-26: over by ~11,155 lb loaded
Mercedes-Benz Sprinter '19-26: over by ~8,905 lb loaded
Nissan Armada (3.5 twin-turbo, tow pkg) '25-26: over by ~8,005 lb loaded
Nissan Armada (tow pkg) '17-24: over by ~8,005 lb loaded
Nissan Frontier (3.8 V6, tow pkg) '22-26: over by ~9,220 lb loaded
Nissan Pathfinder (tow pkg) '22-26: over by ~10,255 lb loaded
Nissan Titan (5.6 V8, tow pkg) '17-24: over by ~6,870 lb loaded
Nissan Titan XD (Cummins diesel) '16-19: over by ~4,215 lb loaded
Ram 1500 (3.0 Hurricane, max tow) '25-26: over by ~5,205 lb loaded
Ram 1500 (5.7 Hemi eTorque, max tow) '19-24: over by ~4,180 lb loaded
Ram 1500 (5.7 Hemi, max tow) '11-18: over by ~6,095 lb loaded
Ram ProMaster '14-26: over by ~9,435 lb loaded
Rivian R1S '22-26: over by ~8,725 lb loaded
Rivian R1T '22-26: over by ~5,755 lb loaded
Subaru Ascent '19-26: over by ~11,155 lb loaded
Subaru Outback (XT / Wilderness) '20-26: over by ~12,505 lb loaded
Tesla Cybertruck '24-26: over by ~5,755 lb loaded
Tesla Model X (tow pkg) '16-26: over by ~11,155 lb loaded
Tesla Model Y (tow pkg) '21-26: over by ~12,505 lb loaded
Toyota 4Runner (4.0 V6) '11-24: over by ~11,155 lb loaded
Toyota 4Runner (i-Force Max) '25-26: over by ~10,255 lb loaded
Toyota Grand Highlander (i-Force Max) '24-26: over by ~11,155 lb loaded
Toyota Highlander (tow pkg) '20-26: over by ~11,155 lb loaded
Toyota Land Cruiser (i-Force Max) '24-26: over by ~10,255 lb loaded
Toyota Sequoia (i-Force Max, tow pkg) '23-26: over by ~7,085 lb loaded
Toyota Sienna '21-26: over by ~12,505 lb loaded
Toyota Tacoma (i-Force Max, tow pkg) '24-26: over by ~9,805 lb loaded
Toyota Tacoma (V6, tow pkg) '16-23: over by ~9,535 lb loaded
Toyota Tundra (5.7 V8, tow pkg) '11-21: over by ~6,475 lb loaded
Toyota Tundra (i-Force Max, tow pkg) '22-26: over by ~4,855 lb loaded
Volkswagen Atlas (tow pkg) '18-26: over by ~11,155 lb loaded

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

THE SPECS

Length40.9 ft

Height (incl. A/C)13.4 ft

Width8.5 ft

GVWR15,655 lb

Dry weightnot published

Sleeps4

Slide-outs3

Axles2

Fresh water53 gal

Grey water39 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× Sleeper sofa(Convertible)—

HOW IT'S BUILT: 2/5

WallsLaminated fiberglass

FrameWood

RoofStandard

UnderbellyEnclosed

Keystone (Mixed tier): Retreat Destination Trailer

YEAR BY YEAR: WHAT CHANGED

2025Introduced

FINDING ONE

Findable: a few listed nationwide most weeks. Why: Keystone is a volume manufacturer; only one model year. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

Laminated rear-sofa plan; weights not published.

OTHER RETREAT FLOORPLANS

391CLDL · 15,790 lb · sleeps 9 391FDEN · 13,200 lb · sleeps 4 391FKSS · 13,350 lb · sleeps 4 391FLFT · 14,000 lb · sleeps 7 391FLRS · 13,400 lb · sleeps 4 391FLSL · 15,655 lb · sleeps 6 391FSRL · 15,700 lb · sleeps 8 391HBDL · 15,655 lb · sleeps 9 391LOFT · 13,925 lb · sleeps 6 391MBNK · 13,190 lb · sleeps 7 391MKTS · 13,925 lb · sleeps 4 391RDEN · 13,470 lb · sleeps 6 39CLDL · 15,772 lb · sleeps 9 39FDEN · 13,200 lb · sleeps 4 the whole line →

Find one for sale

Live listings for the 391RS 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 Retreat line ↗

Is the 391RS 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 low-confidence record: figures are inferred and should be independently verified, retrieved 2026-07.