2026 Grand Design Momentum410TH

The Momentum 410TH is a fifth-wheel toy hauler 44 ft 11 in long with a 13 ft 6 in garage, on three axles with three slide-outs and a 60-gallon fuel station. Grand Design lists the 410TH 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 16,800 lb, a GVWR of 22,500 lb and a pin weight of 3,600 lb. It publishes no cargo carrying capacity, so none is printed or computed here. Tanks are 140 gal fresh, 104 gal grey and 104 gal black, and it sleeps 6.

Grand Design’s page names the 381MS (2027), 414M (2026) and 351MS (2027) as comparison floorplans; the year in brackets is the model year each one’s own page carries.

How the 410TH 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 as a share of dry weight, 21.4%: third-largest of fourteen, between the 394G (21.3%) and the 363G (21.8%).
• Pin weight, 3,600 lb: sixth-heaviest of fourteen, between the 344M and 394G (3,500 lb) and the 392M (3,650 lb).
• Dry weight, 16,800 lb: seventh-heaviest of fourteen, between the 394G (16,400 lb) and the 381MS (17,722 lb).
• Black tank, 104 gal: largest of fourteen, level with the 320G, 350G and two others; next are the 395MT and 414M (78 gal).
• Length, 44 ft 11 in: shared with the 394G; of fourteen, eight shorter and four longer, nearest the 399M (44 ft 10 in) and the 392M (45 ft 11 in).
• Grey tank, 104 gal: largest of fourteen, level with the 325G, 344M and four others; next is the 363G (102 gal).
• GVWR, 22,500 lb: shared with the 394G; of fourteen, six lower and six higher, nearest the 344M, 351MS and 363G (19,000 lb) and the 381MS, 392M and four others (23,500 lb).
• Sleeping capacity, 6: shared with the 320G, 325G and three others; of fourteen, two smaller and six larger, nearest the 350G and 399M (5) and the 394G, 395MT and two others (7).

Next to the 394G (2027 page), the nearest lighter floorplan by dry weight, the 410TH is 400 lb heavier by dry weight, has a pin weight 100 lb heavier, has a fresh tank 42 gal larger, has a black tank 52 gal larger and sleeps one fewer; the two publish the same GVWR, length, exterior height, grey tank and slide-out count.

Next to the 381MS (2027 page), the nearest heavier floorplan by dry weight, the 410TH is 922 lb lighter by dry weight, has a GVWR 1,000 lb lower, has a pin weight 126 lb lighter, is 1 ft longer and has a grey tank 52 gal larger; the two publish the same exterior height, fresh 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 410TH on this page is highlighted; each other profiled plan links to its own page. The 410TH 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 381MS, nearest on the published figures. It differs on 5 of the 8 fields both publish (this plan first): length 44 ft 11 in vs 43 ft 11 in; dry weight 16,800 lb vs 17,722 lb; GVWR 22,500 lb vs 23,500 lb; hitch weight 3,600 lb vs 3,726 lb; grey tank 104 gal vs 52 gal. They match on sleeps, fresh tank and black tank.

Either side of it by GVWR: Momentum 394G matches it at 22,500 lb GVWR; Momentum 381MS is 1,000 lb heavier (23,500 lb GVWR).

All 28 Momentum floorplans: Momentum line hub.

Against the 410TH: the Model G 3250 is 500 lb lighter and 7 ft shorter; the Seismic 415 is 500 lb lighter and 2 ft longer; the Solitude 414LJMJ is 1,000 lb heavier and 2 ft shorter.

16 of the 18 fields this catalogue tracks are published for the 410TH. Not published: cargo capacity (CCC), interior height.

Sourcing rules: methodology.