2026 Grand Design Momentum G-Class28G

The Momentum G-Class 28G is a travel-trailer toy hauler 33 ft 11 in long with a 16 ft 6 in garage, on two axles with two slide-outs and a 30-gallon fuel station. Grand Design lists the 28G 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 9,153 lb, a GVWR of 13,000 lb and a tongue weight of 1,368 lb. It publishes no cargo carrying capacity, so none is printed or computed here. Tanks are 90 gal fresh, 78 gal grey and 39 gal black, and it sleeps 6.

Grand Design’s page names the 23G (2026), 29GS (2027) and 21G (2027) as comparison floorplans; the year in brackets is the model year each one’s own page carries.

How the 28G differs from the other thirteen Momentum travel trailers. 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.

• Dry weight, 9,153 lb: third-heaviest of fourteen, between the 30G (9,139 lb) and the 31G (9,700 lb).
• Tongue weight as a share of dry weight, 14.9%: third-smallest of fourteen, between the 21G and 28MAV (14.5%) and the 29GS (15.4%).
• Tongue weight, 1,368 lb: seventh-heaviest of fourteen, between the 23G (1,242 lb) and the 25G and 30MAV (1,400 lb).
• Grey tank, 78 gal: largest of fourteen, level with the 25G, 27G and two others; next are the 17MAV, 21G and six others (74 gal).
• Slide-out count, 2: most of ten, level with the 25G, 29GS and two others; next are the 21G, 23G and three others (1).
• Length, 33 ft 11 in: shared with the 28MAV; of fourteen, eight shorter and four longer, nearest the 27G (32 ft 3 in) and the 29GS (34 ft 6 in).
• GVWR, 13,000 lb: highest of fourteen, level with the 23G, 25G and four others; next is the 30MAV (12,000 lb).
• Black tank, 39 gal: shared with the 21G, 23G and four others; of fourteen, six smaller and one larger, nearest the 17MAV, 22MAV and four others (37 gal) and the 31G (76 gal).

Next to the 30G (2027 page), the nearest lighter floorplan by dry weight, the 28G is 14 lb heavier by dry weight, has a tongue weight 57 lb lighter, is 11 in shorter and sleeps one fewer; the two publish the same GVWR, exterior height, interior height, fresh tank, grey tank, black tank and slide-out count.

Next to the 31G (2027 page), the nearest heavier floorplan by dry weight, the 28G is 547 lb lighter by dry weight, has a tongue weight 204 lb lighter, is 2 ft shorter, has a grey tank 41 gal larger and has a black tank 37 gal smaller; the two publish the same GVWR, exterior height, interior height, fresh 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 28G on this page is highlighted; each other profiled plan links to its own page. The 28G 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 29GS, nearest on the published figures. It differs on 3 of the 8 fields both publish (this plan first): length 33 ft 11 in vs 34 ft 6 in; dry weight 9,153 lb vs 9,720 lb; hitch weight 1,368 lb vs 1,500 lb. They match on sleeps, GVWR, fresh tank, grey tank and black tank.

Either side of it by GVWR: Momentum 27G matches it at 13,000 lb GVWR; Momentum 29GS matches it at 13,000 lb GVWR.

All 28 Momentum floorplans: Momentum line hub.

Against the 28G: the Jay Flight 40FKDS is 7 ft longer and sleeps 2 fewer; the Cherokee Timberwolf 39DL is 95 lb heavier and 9 ft longer; the Vengeance Rogue 25L141 is 100 lb lighter and 1 ft shorter.

17 of the 18 fields this catalogue tracks are published for the 28G. Not published: cargo capacity (CCC).

Sourcing rules: methodology.