2026 Grand Design Momentum414M

The Momentum 414M is a fifth-wheel toy hauler 46 ft 4 in long with a 14 ft garage, on three axles with three slide-outs and a 60-gallon fuel station. Grand Design lists the 414M as a 2026 model sold from dealer stock; its page carries 2026 figures, and every figure on this page is from it.

Grand Design’s page lists an unloaded vehicle weight of 18,500 lb, a GVWR of 23,500 lb and a pin weight of 3,800 lb. It publishes no cargo carrying capacity, so none is printed or computed here. Tanks are 140 gal fresh, 78 gal grey and 78 gal black, and it sleeps 7.

Grand Design’s page names the 395MT (2027) and 399M (2027) as comparison floorplans; the year in brackets is the model year each one’s own page carries.

How the 414M differs from the other thirteen Momentum fifth wheels. Most distinctive first. Each rank counts only the siblings that publish that field, and a figure most of them share is left out. Not every one of these pages covers the same model years as this one (2026); each figure is the one its own page prints, so a rank compares pages, not one model year.

• Pin weight, 3,800 lb: heaviest of fourteen; next are the 395MT and 396DB (3,760 lb).
• Dry weight, 18,500 lb: fourth-heaviest of fourteen, between the 392M (18,114 lb) and the 395MT and 396DB (19,100 lb).
• Length, 46 ft 4 in: longest of fourteen, level with the 395MT and 396DB; next is the 392M (45 ft 11 in).
• Pin weight as a share of dry weight, 20.5%: seventh-largest of fourteen, between the 392M (20.2%) and the 325G (20.9%).
• GVWR, 23,500 lb: highest of fourteen, level with the 381MS, 392M and three others; next are the 394G and 410TH (22,500 lb).
• Grey tank, 78 gal: shared with the 395MT; of fourteen, four smaller and eight larger, nearest the 320G, 350G and two others (52 gal) and the 363G (102 gal).
• Sleeping capacity, 7: shared with the 394G, 395MT and 396DB; of fourteen, eight smaller and two larger, nearest the 320G, 325G and four others (6) and the 363G and 392M (9).
• Black tank, 78 gal: shared with the 395MT; of fourteen, seven smaller and five larger, nearest the 325G, 344M and five others (52 gal) and the 320G, 350G and three others (104 gal).

Next to the 392M (2027 page), the nearest lighter floorplan by dry weight, the 414M is 386 lb heavier by dry weight, has a pin weight 150 lb heavier, is 5 in longer, has a grey tank 26 gal smaller, has a black tank 26 gal larger and sleeps two fewer; the two publish the same GVWR, exterior height, fresh tank and slide-out count.

Next to the 395MT (2027 page), the nearest heavier floorplan by dry weight, the 414M is 600 lb lighter by dry weight and has a pin weight 40 lb heavier; the two publish the same GVWR, length, exterior height, fresh tank, grey tank, black tank, sleeping capacity and slide-out count.

Momentum is Grand Design's toy-hauler family, and it spans four rosters across both tow types. The full-size Momentum fifth wheel is the flagship — a 101-inch wide-body coach on MORryde independent suspension with disc brakes, carrying a 60-gallon dual fuel station. The Momentum G-Class fifth wheel sits below it on MORryde CRE3000 suspension and a Rotoflex pin box with a 30-gallon fuel station, and the G-Class travel trailer puts that same garage behind a bumper pull. The Momentum MAV is the compact end — the lightest and cheapest way into a Momentum garage, and the one roster with no fuel station at all. The 414M on this page is highlighted; each other profiled plan links to its own page. The 414M is listed by Grand Design as a 2026 model sold from dealer stock; the roster descriptions in this paragraph come from Grand Design’s 2027 Momentum pages and are not asserted for this 2026 unit. Grand Design’s current Momentum roster, read 24 Oct 2026, runs to 28 floorplans across the four rosters, and every one has its own page here; the table below lists this plan’s own roster.

Closest sibling: the Momentum 395MT, nearest on the published figures. It differs on 2 of the 8 fields both publish (this plan first): dry weight 18,500 lb vs 19,100 lb; hitch weight 3,800 lb vs 3,760 lb. They match on length, sleeps, GVWR, fresh tank, grey tank and black tank.

Either side of it by GVWR: Momentum 399M matches it at 23,500 lb GVWR.

All 28 Momentum floorplans: Momentum line hub.

Against the 414M: the Solitude 414LJMJ is 4 ft shorter and sleeps 1 fewer; the Riverstone 442MC is 345 lb heavier and 3 ft shorter and sleeps 1 fewer; the Model G 3950 is 500 lb lighter.

16 of the 18 fields this catalogue tracks are published for the 414M. Not published: cargo capacity (CCC), interior height.

Sourcing rules: methodology.