2026 Brinkley Model Z3400

The 3400 turns the back of the coach into an indoor-outdoor kitchen. The rear galley opens through a rear wall to a campside outdoor kitchen and a Zero-Gravity rear patio — a 1,500-pound-capacity deck with electric top latches that drops down to extend the living space outside. A center living area with a workstation and chairs sits amidships, and the front holds a private bedroom with a king bed slide (queen optional). Three slide-outs open it up to nearly 39 feet of indoor-outdoor entertaining.

It is a heavier, longer plan. RVUSA lists a published 17,495-pound GVWR against a 13,898-pound dry weight, leaving a 3,597-pound payload and a 2,391-pound dry pin — figures that want a properly rated three-quarter-ton or one-ton truck. The full Brinkley build carries through on the monotube triple-powder-coated chassis with 7,000-pound tandem axles, a Helux king pin and brass plumbing, with a 16-cubic-foot 12-volt refrigerator, 370-watt solar, a 130-gallon grey tank and the two-air-conditioner package standard.

At an MSRP of $134,128 it sits among the upper plans. For a couple who entertains outdoors and wants a rear kitchen that opens to a campside galley and a drop-down patio deck, the 3400 is the indoor-outdoor Model Z.

The Brinkley Model Z is a mid-size luxury fifth wheel and one of the most talked-about new entrants in the segment. The line runs to twelve floorplans for 2026; the eight highest-demand layouts are profiled here in full, and the remaining four are catalogued on the line hub. The 3400 on this page is highlighted; each other profiled plan links to its own page.

This floorplan carries its water comfortably. A full 75-gallon fresh tank is roughly 17% of the 3,597-pound cargo capacity, leaving the 3400 with a usable gear budget even when you tow full.

The published dry pin weight of 2,391 pounds is 17% of this floorplan’s 13,898-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 17,495-pound GVWR the 3400 is towing 3,597 pounds more than its 13,898-pound dry figure, and that is the number your vehicle has to be rated for — not the brochure weight.

Tank balance is generous here: 75 gallons of fresh against 130 grey and 45 black, so waste capacity keeps pace with supply and the fresh tank is the constraint that ends a dry stay.

Ranked by GVWR, the 3400 sits 8 of 11 in the Model Z line: 17,495 pounds against a line that runs from 13,995 to 17,695 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 Z 3300 is 500 pounds lighter at 16,995 lb GVWR; and Model Z 3515 matches it exactly at 17,495 lb GVWR.

1 other Model Z plan shares this floorplan’s 17,495 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 3400: the Pinnacle 36FBTS is 5 lb heavier and 2 ft longer and sleeps 3 fewer; the Seismic 359 is 5 lb heavier and sleeps 1 fewer; the North Point 387FBTS is 155 lb heavier and 4 ft longer and sleeps 3 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 Model Z floorplans profiled here run 10,691 to 14,859 pounds dry and 30 to 42 feet of exterior length across 11 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 Z line hub.

This catalog tracks 18 specification fields per floorplan. Named sources publish 17 of them for the 3400. 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 (98%) 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.