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Grand Design Momentum 414M

Fifth wheelbuilt 2024–26Mixed build tierFindable on the used market
WHAT ONE COSTS
$119,000est. used (2026, 1 yr old)

Sticker was $165,308 in 2026. Out of production since 2026, so the used market is the only way to buy one. Estimate assumes a 2026 unit.

WHAT IT WEIGHS BEHIND YOUR TRUCK
~20,468 lbestimated as towed, for 2 people

dry weight 18,500 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 around22,745 lb (10% margin)
GVWR (the sticker maximum)23,500 lb
Tongue weight, loaded~4,204 lb (21%)
WHICH TOW VEHICLES IT FITS: 11 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 414M'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 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 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 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 84it doesn't fit

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

THE SPECS
Length46.3 ft
Height (incl. A/C)13.5 ft
Width8.4 ft
Interior height8.4 ft
GVWR23,500 lb
Dry weight18,500 lb
Dry tongue weight3,800 lb
Sleeps7
Slide-outs3
Axles3
Fresh water140 gal
Grey water78 gal
Black water78 gal
Solar (standard)330 W

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

WHERE PEOPLE SLEEP
  • Front queen bed, king optional(Permanent)60×80
  • Bunk(Permanent)30×80
  • Garage loft/Happijac bed(Stow-away)
  • 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
  • 2024Introduced
  • 2027Moved to dealer-stock-only status
FINDING ONE

Findable: a few listed nationwide most weeks. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

Longest Momentum at 46 ft 4 in. with a 14 ft garage; now dealer stock only.

OTHER MOMENTUM FLOORPLANS
Find one for sale

Live listings for the 414M 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 414M 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.