2026 Grand Design Momentum G-Class23G

The Momentum G-Class 23G is a travel-trailer toy hauler 28 ft 10 in long with a 15 ft* garage, on two axles with one slide-out and a 30-gallon fuel station. Grand Design lists the 23G 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 7,669 lb, a GVWR of 13,000 lb and a tongue weight of 1,242 lb. It publishes no cargo carrying capacity, so none is printed or computed here. Tanks are 90 gal fresh, 74 gal grey and 39 gal black, and it sleeps 6.

Grand Design’s page names the 21G (2027), 29GS (2027) and 31G (2027) as comparison floorplans; the year in brackets is the model year each one’s own page carries.

How the 23G 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.

• Length, 28 ft 10 in: fourth-shortest of fourteen, between the 21G (26 ft 11 in) and the 24MAV (29 ft 11 in).
• Dry weight, 7,669 lb: sixth-lightest of fourteen, between the 21G (7,280 lb) and the 28MAV (8,300 lb).
• Tongue weight, 1,242 lb: seventh-lightest of fourteen, between the 24MAV and 28MAV (1,200 lb) and the 28G (1,368 lb).
• Slide-out count, 1: fewest of ten, level with the 21G, 27G and two others; next are the 25G, 28G and three others (2).
• GVWR, 13,000 lb: highest of fourteen, level with the 25G, 27G and four others; next is the 30MAV (12,000 lb).
• Tongue weight as a share of dry weight, 16.2%: shared with the 31G; of fourteen, seven smaller and five larger, nearest the 22MAV (16%) and the 25G (16.3%).
• Black tank, 39 gal: shared with the 21G, 25G 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 21G (2027 page), the nearest lighter floorplan by dry weight, the 23G is 389 lb heavier by dry weight, has a GVWR 2,000 lb higher, has a tongue weight 186 lb heavier and is 1 ft 11 in longer; the two publish the same exterior height, interior height, fresh tank, grey tank, black tank, sleeping capacity and slide-out count.

Next to the 28MAV (2027 page), the nearest heavier floorplan by dry weight, the 23G is 631 lb lighter by dry weight, has a GVWR 2,000 lb higher, has a tongue weight 42 lb heavier, is 5 ft 1 in shorter, stands 2 in taller and has a black tank 2 gal larger; the two publish the same fresh tank, grey 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 23G on this page is highlighted; each other profiled plan links to its own page. The 23G 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 25G, nearest on the published figures. It differs on 4 of the 8 fields both publish (this plan first): length 28 ft 10 in vs 30 ft 11 in; dry weight 7,669 lb vs 8,600 lb; hitch weight 1,242 lb vs 1,400 lb; grey tank 74 gal vs 78 gal. They match on sleeps, GVWR, fresh tank and black tank.

Either side of it by GVWR: Momentum 30MAV is 1,000 lb lighter (12,000 lb GVWR); Momentum 25G matches it at 13,000 lb GVWR.

All 28 Momentum floorplans: Momentum line hub.

Against the 23G: the Jay Flight 40FKDS is 12 ft longer and sleeps 2 fewer; the Cherokee Timberwolf 39DL is 95 lb heavier and 14 ft longer; the Vengeance Rogue 25L141 is 100 lb lighter and 4 ft longer.

17 of the 18 fields this catalogue tracks are published for the 23G. Not published: cargo capacity (CCC).

Sourcing rules: methodology.