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.

This floorplan carries its water comfortably. A full 98-gallon fresh tank is roughly 13% of the 6,100-pound cargo capacity, leaving the 394G with a usable gear budget even when you tow full.

The published dry pin weight of 3,500 pounds is 21% of this floorplan’s 16,400-pound dry weight. Fifth-wheel pin weight rides in the bed of the truck, so it comes off payload rather than off tow rating — and it rises with the trailer as you load it, not in proportion to what you put over the axles.

Nothing above changes the ceiling. Loaded to its 22,500-pound GVWR the 394G is towing 6,100 pounds more than its 16,400-pound dry figure, and that is the number your vehicle has to be rated for — not the brochure weight.

Tank balance is generous here: 98 gallons of fresh against 104 grey and 52 black, so waste capacity keeps pace with supply and the fresh tank is the constraint that ends a dry stay.

Ranked by GVWR, the 394G sits 7 of 8 in the Momentum line: 22,500 pounds against a line that runs from 9,950 to 23,500 pounds. That position is the useful thing to know, because the plans immediately either side of it are the real alternatives.

Either side of it in the same line: Momentum 344M is 3,500 pounds lighter at 19,000 lb GVWR; and Momentum 392M is 1,000 pounds heavier at 23,500 lb GVWR.

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. Those are differences in the published numbers only — what they cost, how they are built and how they live are separate questions each of those pages answers on its own terms.

Those are the nearest fifth wheels from other lines by weight — one per line, picked by proximity on that figure and nothing else. They are listed so the same tow vehicle can be checked against real alternatives, not because they are equivalent inside; layout, build and price diverge sharply across that group.

For scale, the Momentum floorplans profiled here run 5,542 to 18,114 pounds dry and 23 to 46 feet of exterior length across 8 plans. Where a floorplan falls in that spread usually says more about which vehicle can tow it, and which site it fits, than the layout name does.

Every profiled floorplan in this line, with the full weight table, is on the Momentum line hub.

This catalog tracks 18 specification fields per floorplan. Named sources publish 17 of them for the 394G. The rest are not shown, because the alternative is reading a figure across from a sibling floorplan or from what the segment usually does — and a number nobody published is worth less than an admitted gap.

Not published for this floorplan: axle count, tire size (a tire description is published, a size is not). If you find one of these in a manufacturer document for this plan, it belongs on this page.

The completeness figure at the foot of this page (96%) measures the same thing on the full field set: it is a measurement of how much this floorplan’s manufacturer publishes, not of how much research went into the page.

How every figure here was sourced and checked is set out on the methodology page.