Grand Design Momentum 381MS
Fifth wheelbuilt 2021– (in production)Mixed build tierFindable on the used market
WHAT ONE COSTS
$176,000MSRP today
Still in production. A used 2023 would run roughly $103,800.
WHAT IT WEIGHS BEHIND YOUR TRUCK
~19,690 lbestimated as towed, for 2 people
dry weight 17,722 lb + fresh water (140 gal, full) 1,168 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 around21,880 lb (10% margin)
GVWR (the sticker maximum)23,500 lb
Tongue weight, loaded~4,140 lb (21%)
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 381MS's published weights changed mid-run. Fifth wheels also need a pickup bed and are held to the fifth-wheel rating where published.
The 81it doesn't fit
- Chevrolet Colorado / GMC Canyon (2.7 Turbo HO, tow pkg) '23-26: over by ~12,760 lb loaded
- Chevrolet Colorado / GMC Canyon (2.8 Duramax) '15-22: over by ~12,760 lb loaded
- Chevrolet Silverado / GMC Sierra 1500 (6.2 V8, max tow) '19-26: over by ~10,420 lb loaded
- Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '20-23: over by ~3,030 lb loaded
- Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '11-19: over by ~3,400 lb loaded
- Chevrolet Silverado 1500 (max tow) '14-18: over by ~9,250 lb loaded
- Chevrolet Silverado EV (4WT) '24-26: over by ~8,440 lb loaded
- Chevrolet Suburban (5.3 V8, max tow) '21-26: no pickup bed (cannot hitch a fifth wheel)
- Chevrolet Tahoe (5.3 V8, max tow) '21-26: no pickup bed (cannot hitch a fifth wheel)
- Chevrolet Traverse (tow pkg) '18-26: no pickup bed (cannot hitch a fifth wheel)
- Chrysler Pacifica '17-26: no pickup bed (cannot hitch a fifth wheel)
- Dodge Durango (5.7 / 6.4 Hemi, tow pkg) '14-26: no pickup bed (cannot hitch a fifth wheel)
- Ford Bronco 4-dr (2.7 EcoBoost, tow pkg) '21-26: no pickup bed (cannot hitch a fifth wheel)
- Ford Expedition (3.5 EcoBoost, tow pkg) '25-26: no pickup bed (cannot hitch a fifth wheel)
- Ford Expedition (3.5 EcoBoost, tow pkg) '18-24: no pickup bed (cannot hitch a fifth wheel)
- Ford Explorer (3.0 EcoBoost, tow pkg) '20-26: no pickup bed (cannot hitch a fifth wheel)
- Ford F-150 (3.5 EcoBoost, max tow) '24-26: over by ~9,970 lb loaded
- Ford F-150 (3.5 EcoBoost, max tow) '15-20: over by ~8,980 lb loaded
- Ford F-150 (3.5 EcoBoost, max tow) '21-23: over by ~7,090 lb loaded
- Ford F-150 (3.5 EcoBoost, max tow) '11-14: over by ~9,520 lb loaded
- Ford F-150 Lightning (max trailer tow) '22-26: over by ~10,690 lb loaded
- Ford F-250 Super Duty (6.7 diesel, tow pkg) '17-19: over by ~3,490 lb loaded
- Ford F-250 Super Duty (6.7 diesel) '11-16: over by ~4,750 lb loaded
- Ford Maverick (2.0 EcoBoost, 4K tow pkg) '22-26: over by ~16,090 lb loaded
- Ford Ranger (2.3 EcoBoost, tow pkg) '19-23: over by ~12,940 lb loaded
- Ford Ranger (2.7 EcoBoost, tow pkg) '24-26: over by ~12,940 lb loaded
- Ford Transit (HD tow pkg) '15-26: no pickup bed (cannot hitch a fifth wheel)
- GMC Acadia (tow pkg) '20-26: no pickup bed (cannot hitch a fifth wheel)
- GMC Hummer EV Pickup '22-26: over by ~12,940 lb loaded
- GMC Sierra EV '24-26: over by ~8,890 lb loaded
- GMC Yukon / Yukon XL (5.3 V8, max tow) '21-26: no pickup bed (cannot hitch a fifth wheel)
- Honda Odyssey '18-26: no pickup bed (cannot hitch a fifth wheel)
- Honda Passport (AWD) '19-26: no pickup bed (cannot hitch a fifth wheel)
- Honda Pilot (AWD, tow pkg) '16-26: no pickup bed (cannot hitch a fifth wheel)
- Honda Ridgeline (AWD) '17-26: over by ~15,190 lb loaded
- Hyundai Palisade (tow pkg) '20-26: no pickup bed (cannot hitch a fifth wheel)
- Hyundai Santa Cruz (2.5T AWD) '22-26: over by ~15,190 lb loaded
- Jeep Gladiator (3.6 V6, max tow) '20-26: over by ~12,760 lb loaded
- Jeep Grand Cherokee (5.7 Hemi) '11-21: no pickup bed (cannot hitch a fifth wheel)
- Jeep Grand Cherokee (WL, tow pkg) '22-26: no pickup bed (cannot hitch a fifth wheel)
- Jeep Grand Cherokee L (5.7 Hemi) '21-26: no pickup bed (cannot hitch a fifth wheel)
- Jeep Grand Wagoneer (Hurricane, max tow) '22-26: no pickup bed (cannot hitch a fifth wheel)
- Jeep Wagoneer (Hurricane, max tow) '22-26: no pickup bed (cannot hitch a fifth wheel)
- Jeep Wrangler Unlimited 4-dr (tow pkg) '18-26: no pickup bed (cannot hitch a fifth wheel)
- Kia Telluride (tow pkg) '20-26: no pickup bed (cannot hitch a fifth wheel)
- Land Rover Defender '20-26: no pickup bed (cannot hitch a fifth wheel)
- Land Rover Discovery '17-26: no pickup bed (cannot hitch a fifth wheel)
- Lexus GX 550 (tow pkg) '24-26: no pickup bed (cannot hitch a fifth wheel)
- Lexus LX 600 '22-26: no pickup bed (cannot hitch a fifth wheel)
- Mazda CX-90 (3.3 turbo, tow pkg) '24-26: no pickup bed (cannot hitch a fifth wheel)
- Mercedes-Benz Sprinter '19-26: no pickup bed (cannot hitch a fifth wheel)
- Nissan Armada (3.5 twin-turbo, tow pkg) '25-26: no pickup bed (cannot hitch a fifth wheel)
- Nissan Armada (tow pkg) '17-24: no pickup bed (cannot hitch a fifth wheel)
- Nissan Frontier (3.8 V6, tow pkg) '22-26: over by ~13,255 lb loaded
- Nissan Pathfinder (tow pkg) '22-26: no pickup bed (cannot hitch a fifth wheel)
- Nissan Titan (5.6 V8, tow pkg) '17-24: over by ~10,905 lb loaded
- Nissan Titan XD (Cummins diesel) '16-19: over by ~8,250 lb loaded
- Ram 1500 (3.0 Hurricane, max tow) '25-26: over by ~9,240 lb loaded
- Ram 1500 (5.7 Hemi eTorque, max tow) '19-24: over by ~8,215 lb loaded
- Ram 1500 (5.7 Hemi, max tow) '11-18: over by ~10,130 lb loaded
- Ram 2500 (6.7 Cummins) '11-18: over by ~3,510 lb loaded
- Ram ProMaster '14-26: no pickup bed (cannot hitch a fifth wheel)
- Rivian R1S '22-26: no pickup bed (cannot hitch a fifth wheel)
- Rivian R1T '22-26: over by ~9,790 lb loaded
- Subaru Ascent '19-26: no pickup bed (cannot hitch a fifth wheel)
- Subaru Outback (XT / Wilderness) '20-26: no pickup bed (cannot hitch a fifth wheel)
- Tesla Cybertruck '24-26: over by ~9,790 lb loaded
- Tesla Model X (tow pkg) '16-26: no pickup bed (cannot hitch a fifth wheel)
- Tesla Model Y (tow pkg) '21-26: no pickup bed (cannot hitch a fifth wheel)
- Toyota 4Runner (4.0 V6) '11-24: no pickup bed (cannot hitch a fifth wheel)
- Toyota 4Runner (i-Force Max) '25-26: no pickup bed (cannot hitch a fifth wheel)
- Toyota Grand Highlander (i-Force Max) '24-26: no pickup bed (cannot hitch a fifth wheel)
- Toyota Highlander (tow pkg) '20-26: no pickup bed (cannot hitch a fifth wheel)
- Toyota Land Cruiser (i-Force Max) '24-26: no pickup bed (cannot hitch a fifth wheel)
- Toyota Sequoia (i-Force Max, tow pkg) '23-26: no pickup bed (cannot hitch a fifth wheel)
- Toyota Sienna '21-26: no pickup bed (cannot hitch a fifth wheel)
- Toyota Tacoma (i-Force Max, tow pkg) '24-26: over by ~13,840 lb loaded
- Toyota Tacoma (V6, tow pkg) '16-23: over by ~13,570 lb loaded
- Toyota Tundra (5.7 V8, tow pkg) '11-21: over by ~10,510 lb loaded
- Toyota Tundra (i-Force Max, tow pkg) '22-26: over by ~8,890 lb loaded
- Volkswagen Atlas (tow pkg) '18-26: no pickup bed (cannot hitch a fifth wheel)
These verdicts assume 2 people aboard with typical gear. See the margin for your truck and your crew →
THE SPECS
Length43.9 ft
Height (incl. A/C)13.5 ft
Width8.4 ft
Interior height8.4 ft
GVWR23,500 lb
Dry weight17,722 lb
Dry tongue weight3,726 lb
Sleeps6
Slide-outs3
Axles3
Fresh water140 gal
Grey water52 gal
Black water104 gal
Solar (standard)330 W
A missing row means the maker never published that figure: unknown, not zero.
WHERE PEOPLE SLEEP
- 1× Front queen bed, king optional(Permanent)60×80
- 1× Garage loft/Happijac bed(Stow-away)—
- 1× Garage sofa converts to a bed(Convertible)—
HOW IT'S BUILT: 4/5
WallsLaminated fiberglass
FrameAluminum
RoofWalk-on
UnderbellyEnclosed
Grand Design (Mixed tier): Grand Design's toy hauler family, spanning four sub-series: the flagship M-Class fifth wheels (the plain M/MS/TH codes), the lighter G-Class fifth wheels (3xxG), G-Class travel trailers (2xG/3xG), and the entry MAV travel trailers. The premium fifth wheels are laminated aluminum-cage coaches on par with Solitude; MAV is a lighter traditional build, which is why the line as a whole reads mixed rather than uniformly better.
YEAR BY YEAR: WHAT CHANGED
| YEARS | GVWR | DRY | MSRP |
|---|---|---|---|
| 2018–20 | 20,000 lb | 14,700 lb | $175,958 |
| 2021–25 | 22,500 lb | 15,800 lb | $175,958 |
| 2026– | 23,500 lb | 17,722 lb | $175,958 |
- 2018Predecessor 381M introduced with a 20,000 lb GVWR
- 2021Renamed 381MS
- 2026GVWR raised to 23,500 lb
FINDING ONE
Findable: a few listed nationwide most weeks. Why: still in production. Estimated from build volume and production span, not a count of live listings.
OUR TAKE
15 ft garage on a 23,500 lb chassis — the mid-size serious hauler.
OTHER MOMENTUM FLOORPLANS
17MAV · 9,950 lb · sleeps 221G · 11,000 lb · sleeps 622MAV · 9,950 lb · sleeps 523G · 13,000 lb · sleeps 624MAV · 11,000 lb · sleeps 325G · 13,000 lb · sleeps 627G · 13,000 lb · sleeps 627MAV · 11,000 lb · sleeps 628G · 13,000 lb · sleeps 628MAV · 11,000 lb · sleeps 629GS · 13,000 lb · sleeps 630G · 13,000 lb · sleeps 731G · 13,000 lb · sleeps 6320G · 16,400 lb · sleeps 6the whole line →
Find one for sale
Live listings for the 381MS on the big marketplaces. Each search opens pre-filled with this exact floorplan:
Inventory varies by site and day. Slim pickings? search the whole Momentum line ↗
Is the 381MS 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.