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.

A full 75-gallon fresh tank is about 626 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 17% of the 3400’s 3,597 lb cargo capacity, leaving 2,972 lb (424 lb per rated berth). Across 11 Model Z floorplans the water share runs 17% to 32%, and this plan’s is the lowest. Nearest on that share: Model Z 3515 at 18%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).

Closest sibling: the Model Z 3515, nearest on the published figures. It differs on 5 of the 9 fields both publish (this plan first): length 38 ft 11 in vs 39 ft 11 in; dry weight 13,898 lb vs 13,989 lb; cargo capacity 3,597 lb vs 3,506 lb; dry hitch weight 2,391 lb vs 2,607 lb; grey tank 130 gal vs 120 gal. They match on sleeps, GVWR, fresh tank and black tank.

Either side of it by GVWR: Model Z 3300 is 500 lb lighter (16,995 lb GVWR); Model Z 3515 matches it at 17,495 lb GVWR.

All 11 Model Z floorplans: Model Z line hub.

Against the 3400: the Pinnacle 36FBTS is 5 lb heavier and sleeps 3 fewer; the Seismic 359 is 5 lb heavier and sleeps 1 fewer; the Vengeance Rogue 391T145 is 110 lb lighter and 6 ft longer.

17 of the 18 fields this catalogue tracks are published for the 3400. Not published: interior height, tire size (a description is published, a size is not).

Sourcing rules: methodology.