Jayco Jay Flight Bungalow · 2026–2027401LOFT

The Jayco Jay Flight Bungalow 401LOFT is a 42' 0" destination trailer in the MY2027 Jay Flight Bungalow roster. Jayco publishes a dry weight of 11,575 pounds against a 13,400-pound GVWR, and the two tie out exactly with the published 1,825-pound cargo carrying capacity — 11,575 + 1,825 = 13,400. That arithmetic is checked on every plan in this catalogue, and a plan whose own figures disagree is catalogued without a page rather than quietly reconciled.

The dry tongue weight is 1,465 pounds, or 13% of the dry weight. Tongue load transfers to the hitch and the rear axle, and a weight-distributing hitch redistributes it rather than removing it. Payload is 1,825 pounds, 14% of GVWR — that is the ceiling for water, propane, cargo and any dealer-fitted equipment combined. Fresh water alone at 52 gallons is about 434 pounds when full.

Tanks are 52 gallons fresh, 32 grey and 39 black. Interior height is 8' 10" and the exterior measures 8' 0" wide. Jayco publishes two exterior heights for this floorplan: 12' 10" at the roofline and 13' 1" with the air conditioner. Both are printed above, neither is derived from the other, and it is the taller figure that has to clear your garage. This page covers the MY2027 401LOFT only. Jayco’s figures move between model years — measured on one Jayco floorplan across five consecutive years, 20 of 28 published fields changed, including a 290-pound swing in dry hitch weight — so nothing here is carried over from a neighbouring year, and no year is shown that Jayco has not published for this code.

This floorplan has a verified factory record for 2 model years here, 2026 to 2027, and the specification does not hold still. Across those years GVWR ranges from 13,000 lb in 2026 to 13,400 lb in 2027, a spread of 400 lb; dry weight ranges from 11,575 lb in 2027 to 11,580 lb in 2026, a spread of 5 lb; dry tongue weight ranges from 1,465 lb in 2027 to 1,615 lb in 2026, a spread of 150 lb. That is why each model year has its own page below, carrying only its own published figures. Nothing on a year page is copied across from a neighbouring year.

Jay Flight Bungalow is Jayco's destination-trailer roster inside the Jay Flight family — forty-foot-plus units built to be towed to a seasonal site and left there. Jayco's own floorplan index titles the roster a spacious destination travel trailer. It is a factory sub-roster of Jay Flight and is catalogued under the Jay Flight line hub. The 401LOFT on this page is highlighted; every other profiled plan links to its own page.

This floorplan carries its water comfortably. A full 52-gallon fresh tank is roughly 24% of the 1,825-pound cargo capacity, leaving the 401LOFT with a usable gear budget even when you tow full.

The published dry tongue weight of 1,465 pounds is 13% of the 11,575-pound dry weight, which sits inside the 10–15% band usually quoted for stable towing. It is still a dry figure: loading the front pass-through and the fresh tank both push it up.

Nothing above changes the ceiling. Loaded to its 13,400-pound GVWR the 401LOFT is towing 1,825 pounds more than its 11,575-pound dry figure, and that is the number your vehicle has to be rated for — not the brochure weight.

Tank balance is generous here: 52 gallons of fresh against 32 grey and 39 black, so waste capacity keeps pace with supply and the fresh tank is the constraint that ends a dry stay.

Ranked by GVWR, the 401LOFT sits 111 of 117 in the Jay Flight line: 13,400 pounds against a line that runs from 3,500 to 14,500 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: Jay Flight 40FKDS is 400 pounds lighter at 13,000 lb GVWR; and Jay Flight 40RLTS is 100 pounds heavier at 13,500 lb GVWR.

Against the 401LOFT: the Campsite Reserve 39JD is 1 ft longer; the Puma Vista 39FKL is 40 lb heavier; the Cascade 39DLC is 58 lb lighter. 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 travel trailers 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 Jay Flight floorplans profiled here run 2,450 to 12,430 pounds dry and 16 to 42 feet of exterior length across 117 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 Jay Flight line hub.

This catalog tracks 18 specification fields per floorplan. Named sources publish 12 of them for the 401LOFT. 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: slide count, axle count, tire specification, awning, refrigerator, air conditioning. 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 (100%) 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.