2026 Brinkley Model G3970

The 3970 is the Model G defined by its plumbing: it is the two-full-bath plan in the line. Where the 3950 puts a loft over the garage, the 3970 dedicates that space to a second full bathroom — a private bath off the front bedroom and a second full bath serving the living-and-garage end, the layout that buyers who have lived in a one-bath fifth wheel ask for. The 14-foot garage keeps the residential Model G feel up front, with the premium kitchen, a king bed slide-out and the Brinkley G Dinesk convertible dining table/L-desk standard on this plan.

It shares the heavier plans’ numbers. RVUSA lists a published 23,000-pound GVWR against an 18,700-pound dry weight, leaving a 4,300-pound payload against a 3,450-pound dry pin — a one-ton-and-up tow. The full Model G build is standard: the single continuous I-beam chassis on three 8,000-pound axles, the 30,000-pound Gen-Y pin box, SumoSprings, disc brakes, triple 13,500-BTU heat-pump air conditioners, 800-watt solar and the FlexPower 5500 generator, with four power awnings.

At an MSRP of $230,448 it sits near the top of the line, just above the single-bath 3950. For a couple or family who values two full bathrooms over a garage loft — a private owner’s bath and a second full bath for guests — the 3970 is the two-bath Model G.

The Brinkley Model G is the brand's luxury fifth-wheel toy-hauler line — a residential interior and an automotive exterior wrapped around a multi-purpose garage/flex space. The line runs to nine floorplans for 2026; the seven with published weights are profiled here in full, and the two front-office plans are catalogued on the line hub pending weight publication. The 3970 on this page is highlighted; each other profiled plan links to its own page.

This floorplan carries its water comfortably. A full 150-gallon fresh tank is roughly 29% of the 4,300-pound cargo capacity, leaving the 3970 with a usable gear budget even when you tow full.

The published dry pin weight of 3,450 pounds is 18% of this floorplan’s 18,700-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 23,000-pound GVWR the 3970 is towing 4,300 pounds more than its 18,700-pound dry figure, and that is the number your vehicle has to be rated for — not the brochure weight.

Tank balance is generous here: 150 gallons of fresh against 156 grey and 85 black, so waste capacity keeps pace with supply and the fresh tank is the constraint that ends a dry stay.

Ranked by GVWR, the 3970 sits 5 of 7 in the Model G line: 23,000 pounds against a line that runs from 22,000 to 23,000 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: Model G 3950 matches it exactly at 23,000 lb GVWR; and Model G 4000 matches it exactly at 23,000 lb GVWR.

3 other Model G plans share this floorplan’s 23,000 lb GVWR, so the ranking above separates plans that tow to the same ceiling. On a shared chassis the figure that actually differs between them is cargo capacity and where the weight sits, not the rating.

Against the 3970: the Momentum 392M is 500 lb heavier and sleeps 3 more; the Solitude 414LJMJ is 500 lb heavier and 3 ft shorter; the Riverstone 442MC is 845 lb heavier and 2 ft shorter. 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 Model G floorplans profiled here run 16,967 to 18,700 pounds dry and 38 to 46 feet of exterior length across 7 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 Model G line hub.

This catalog tracks 18 specification fields per floorplan. Named sources publish 17 of them for the 3970. 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: interior height, 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 (97%) 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.