2026 Brinkley Model Z3420

The 3420 is Brinkley’s rear-patio entertainer, a redesign of the popular 3400 built from owner feedback — the living area flipped to put the windows and seating on the camp side, an extra foot of length, and more storage. Its signature is a Zero-Gravity rear patio rated to 1,500 pounds, with solid flooring, full railing and a one-touch weather wall, plus a wet bar just inside with a 12-volt fridge that stays powered on the road, and a full outdoor kitchen with an outdoor TV and bar sink. Inside, a center-island kitchen with a 30-inch residential microwave, a 16-cubic-foot refrigerator and a large adjustable-shelf pantry serves a living room with a 64-inch tri-fold sofa (a 54-by-70-inch sleeper), theater seating, a televator and a fireplace. A dual-entry walk-through full bath separates it from a private front bedroom with a king bed slide-out and washer/dryer prep.

It is a heavier, longer plan that rides on 8,000-pound tandem axles. RVUSA lists a published 17,695-pound GVWR against a 14,794-pound dry weight, leaving a 2,901-pound payload and a 2,612-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, a CURT Touring Coil suspension with ABS, a Helux king pin and brass plumbing, with two air conditioners, a 370-watt solar package and the class-leading 79.5-inch bed and bath ceiling height standard.

At an MSRP of $136,263 it is one of the more expensive plans in the line, reflecting the rear-patio package. For a couple who entertains — indoors or out on a true three-season rear deck — and wants a king bedroom and a gourmet kitchen in Brinkley’s luxury build, the 3420 is the line’s social coach.

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 3420 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 22% of the 2,901-pound cargo capacity, leaving the 3420 with a usable gear budget even when you tow full.

The published dry pin weight of 2,612 pounds is 18% of this floorplan’s 14,794-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 17,695-pound GVWR the 3420 is towing 2,901 pounds more than its 14,794-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 90 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 3420 sits 10 of 11 in the Model Z line: 17,695 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 3515 is 200 pounds lighter at 17,495 lb GVWR; and Model Z 3610 matches it exactly at 17,695 lb GVWR.

1 other Model Z plan shares this floorplan’s 17,695 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 3420: the Open Range 3X 393TBR is 5 lb heavier and 4 ft longer; the Pinnacle 38KPTS is 5 lb heavier and 1 ft longer and sleeps 3 fewer; the North Point 387FBTS is 45 lb lighter and 3 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.

Named sources publish 17 of the 18 specification fields this catalogue tracks for the 3420 (97% complete on the full field set).

Not published for this floorplan: interior height, tire size (a tire description is published, a size is not). Those rows are left blank rather than copied from a sibling floorplan.

Sourcing rules: methodology.