2027 Grand Design Momentum G-Class394G

The 394G is the G-Class plan that makes the roster's case. Grand Design publishes 22,500 pounds of GVWR against a 16,400-pound dry weight, which leaves 6,100 pounds of payload — nearly double the entry 320G's 3,300, and more than any full-size Momentum fifth wheel including the 392M. The garage runs fifteen feet, there are three awnings at 14, 12 and 8 feet, and three axles sit under it. The factory scopes this plan explicitly to heavy-duty 7,000-pound axles with ABS drum brakes, where the shorter G-Class plans get 8,000s. The rest is the G-Class build: 101-inch wide-body Super Chassis, MORryde CRE3000, Rotoflex pin box, electric auto-leveling and the R-11 laminated aluminum walls.

Two figures are worth reading as published rather than assumed. The refrigerator is fifteen cubic feet, not the flagship's twenty, and the air conditioning is rated 15,000 BTU — half the 30,000 on the smaller 320G. And at $126,344 this plan lists below the entry 320G's $127,910 despite being nine feet longer with almost twice the payload. The dry pin is 3,500 pounds, identical to the flagship 344M's, which puts this squarely in one-ton territory once the garage is loaded.

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 394G on this page is highlighted; each other profiled plan links to its own page. The full MY2027 catalogue runs to 28 floorplans across the four rosters; eight are profiled in depth here and the rest are catalogued on the line hub with their weights.

A full 98-gallon fresh tank is about 817 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 13% of the 394G’s 6,100 lb cargo capacity, leaving 5,283 lb (755 lb per rated berth). Across 4 Momentum fifth-wheel floorplans the water share runs 13% to 38%, and this plan’s is the lowest. Nearest on that share: Momentum 392M at 22%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).

Closest sibling: the Momentum 392M, nearest on the published figures. It differs on 7 of the 9 fields both publish (this plan first): length 44 ft 11 in vs 45 ft 11 in; sleeps 7 vs 9; dry weight 16,400 lb vs 18,114 lb; GVWR 22,500 lb vs 23,500 lb; cargo capacity 6,100 lb vs 5,386 lb; dry hitch weight 3,500 lb vs 3,650 lb; fresh tank 98 gal vs 140 gal. They match on grey tank and black tank.

Either side of it by GVWR: Momentum 344M is 3,500 lb lighter (19,000 lb GVWR); Momentum 392M is 1,000 lb heavier (23,500 lb GVWR).

All 8 Momentum floorplans: Momentum line hub.

Against the 394G: the Model G 3250 is 500 lb lighter and 7 ft shorter and sleeps 1 fewer; the Solitude 414LJMJ is 1,000 lb heavier and 2 ft shorter and sleeps 1 fewer; the Riverstone 442MC is 1,345 lb heavier and 1 ft shorter and sleeps 1 fewer.

17 of the 18 fields this catalogue tracks are published for the 394G. Not published: axle count, tire size (a description is published, a size is not).

Sourcing rules: methodology.