Jayco Jay Flight Bungalow · 2023–202640DLFT

The Jay Flight Bungalow 40DLFT is one of Jayco's Jay Flight Bungalow destination trailers, the largest and most residential end of the Jay Flight range, built to be parked for a season rather than moved every weekend. This page covers one model year of it — the 2026 40DLFT, exactly as Jayco published it — because the numbers that decide whether your truck can pull this trailer are not the same from one year to the next. Jayco publishes it at 8' 6" wide closed and 14' 0" with the slide-outs run out for the 2026 model year, which is the measurement that matters for a site pitch as well as for the road.

For the 2026 model year Jayco published a 14,500-pound GVWR on a 12,430-pound dry weight, 2,070 pounds of published cargo capacity, a 1,550-pound dry tongue weight. That dry tongue is 12% of the dry weight, inside the 10–15% band conventionally quoted for a bumper-pull trailer. Tongue weight is not fixed — it moves with how the trailer is loaded, and weight added ahead of the axles raises it. A tongue load in that range wants a weight-distribution hitch, and the tow vehicle's tongue-weight limit is a separate number from its trailer-weight limit — check the loaded tongue against the hitch receiver's rating and the vehicle's payload, not against the tow rating alone. The 2026 trailer left the factory on ST235/80R16'E' tyres; the load range in that code is part of the axle rating and a replacement set has to match it.

Against the 2025 build of the same floorplan, 3 published fields moved. The full comparison is in section 02, and it is drawn from two separate verified factory records rather than from one record and an assumption about the other.

A 2026 trailer is close to current as of 2026, but section 05 still applies: check it against its build date rather than its model year. Jayco commonly builds a model year well before the calendar year turns, and the tyre date codes have to be read against the build month, not the badge.

How the 40DLFT differs from the other 122 Jay Flight floorplans. Most distinctive first. Sibling pages may cover other model years than this one (2023–2026). How these ranks are worked out.

• Dry weight, 12,430 lb: heaviest of 123; next is the JAYLOFT (12,360 lb).
• GVWR, 14,500 lb: highest of 123; next is the JAYLOFT (14,300 lb).
• Exterior height, 12 ft 11 in: tallest of 109, level with the JAYLOFT; next are the 401LOFT, 402DLFT and 404LOFT (12 ft 10 in).
• Dry tongue weight, 1,550 lb: seventh-heaviest of 122, between the 401FLTS (1,515 lb) and the 40LOFT (1,595 lb).
• Cargo capacity as a share of GVWR, 14.3%: eighth-smallest of 123, between the 340RLK and 402RLTS (14.1%) and the 40RLTS (14.4%).
• Interior height, 8 ft 10 in: shared with the 401LOFT and JAYLOFT; of 123, 118 lower and two taller, nearest the 255THW (8 ft 5 in) and the 402DLFT and 404LOFT (8 ft 11 in).
• Length, 41 ft 6 in: shared with the 402DLFT; of 123, 117 shorter and four longer, nearest the 40FKDS (41 ft) and the 40LSDL and JAYLOFT (41 ft 11 in).
• Grey tank, 32.5 gal: shared with the 321BDS, 324BDS and four others; of 118, nineteen smaller and 92 larger, nearest the 180LK and 180LKW (20 gal) and the 21QB (33 gal).
• Cargo capacity, 2,070 lb: shared with the 380DQS; of 123, 96 smaller and 25 larger, nearest the 40LSDL (2,060 lb) and the 335BHS (2,075 lb).
• Dry tongue weight as a share of dry weight, 12.5%: shared with the 261BHS and 280BHSW; of 122, 71 smaller and 48 larger, nearest the 172DB and 263BHS (12.4%) and the 295BHS (12.6%).
• Sleeping capacity, 7: shared with the 38BHDS and 402DLFT; of 110, 56 smaller and 51 larger, nearest the 170BH, 172DB and seventeen others (6) and the 178DBS, 178DBSW and eighteen others (8).
• Fresh tank, 52 gal: shared with the 200MKS, 210QB and 47 others; of 123, 31 smaller and 42 larger, nearest the 40LOFT (51 gal) and the 40FKDS (53 gal).

Next to the JAYLOFT (2025–2026 page), the nearest lighter floorplan by dry weight, the 40DLFT is 70 lb heavier by dry weight, has a GVWR 200 lb higher, has 130 lb more cargo capacity, has a dry tongue weight 225 lb lighter, is 5 in shorter, has a grey tank 32.5 gal smaller and sleeps two fewer; the two publish the same exterior height, interior height, fresh tank and black tank.

This floorplan has a published factory record for 4 model years here, 2023 to 2026. The specification does not hold still: GVWR runs from 14,000 lb (2023) to 14,500 lb (2026); dry weight runs from 12,025 lb (2024) to 12,450 lb (2025); dry tongue weight runs from 1,545 lb (2023) to 1,600 lb (2024). Each year’s complete record is printed separately below, carrying only that year’s own published figures and source. Nothing is copied across from a neighbouring year.

Jayco changed 3 of the published fields between the 2025 and 2026 40DLFT. Every figure in both columns is that model year's own factory record — nothing here is carried across from the other year.

A full 52-gallon fresh tank is about 432 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 21% of the 40DLFT’s 2,070 lb cargo capacity, leaving 1,638 lb (234 lb per rated berth). Across 123 Jay Flight floorplans the water share runs 13% to 47%, and 107 give up more than this one. Nearest on that share: Jay Flight 335BHS at 21% and Jay Flight 380DQS at 21%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).