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 432 pounds when full.

Tanks are 52 gallons fresh, 32.5 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.

How the 401LOFT differs from the other 122 Jay Flight floorplans. Most distinctive first. Sibling pages may cover other model years than this one (2026–2027). How these ranks are worked out.

• Length, 42 ft: longest of 123, level with the 404LOFT; next are the 40LSDL and JAYLOFT (41 ft 11 in).
• Dry weight, 11,575 lb: seventh-heaviest of 123, between the 40RLTS (11,560 lb) and the 404LOFT (11,750 lb).
• Cargo capacity as a share of GVWR, 13.6%: shared with the 404LOFT and JAYLOFT; of 123, one smaller and 119 larger, nearest the 402DLFT (13.1%) and the 401FLTS (13.7%).
• GVWR, 13,400 lb: eighth-highest of 123, between the 40FKDS (13,000 lb) and the 40RLTS (13,500 lb).
• Exterior height, 12 ft 10 in: shared with the 402DLFT and 404LOFT; of 109, 104 lower and two taller, nearest the 40LOFT (12 ft 7 in) and the 40DLFT and JAYLOFT (12 ft 11 in).
• Interior height, 8 ft 10 in: shared with the 40DLFT 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).
• Dry tongue weight, 1,465 lb: ninth-heaviest of 122, between the 402DLFT (1,445 lb) and the 401FLTS (1,515 lb).
• 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, 1,825 lb: 50th-largest of 123, between the 262RLSW (1,810 lb) and the 261BHSW (1,835 lb).
• Dry tongue weight as a share of dry weight, 12.7%: shared with the 211MBW, 265RLSW and four others; of 122, 75 smaller and 40 larger, nearest the 295BHS (12.6%) and the 242BHSW, 270MKS and two others (12.8%).
• Sleeping capacity, 8: shared with the 178DBS, 178DBSW and seventeen others; of 110, 59 smaller and 31 larger, nearest the 38BHDS, 402DLFT and 40DLFT (7) and the 264BH, 264BHW and three others (9).
• 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 40RLTS (2021–2026 page), the nearest lighter floorplan by dry weight, the 401LOFT is 15 lb heavier by dry weight, has a GVWR 100 lb lower, has 115 lb less cargo capacity, has a dry tongue weight 165 lb lighter, is 1 ft 8 in longer, stands 9 in taller, has 10 in more interior height and sleeps four more; the two publish the same fresh tank, grey tank and black tank.

Next to the 404LOFT, the nearest heavier floorplan by dry weight, the 401LOFT is 175 lb lighter by dry weight, has a GVWR 200 lb lower, has 25 lb less cargo capacity, has a dry tongue weight 145 lb lighter, has 1 in less interior height and has a grey tank 84.5 gal smaller; the two publish the same length, exterior height, fresh tank, black tank and sleeping capacity.

This floorplan has a published factory record for 2 model years here, 2026 to 2027. The specification does not hold still: GVWR runs from 13,000 lb (2026) to 13,400 lb (2027); dry weight runs from 11,575 lb (2027) to 11,580 lb (2026); dry tongue weight runs from 1,465 lb (2027) to 1,615 lb (2026). 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.

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.

A full 52-gallon fresh tank is about 432 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 24% of the 401LOFT’s 1,825 lb cargo capacity, leaving 1,393 lb (174 lb per rated berth). Across 123 Jay Flight floorplans the water share runs 13% to 47%, and 84 give up more than this one. Nearest on that share: Jay Flight 404LOFT at 23% and Jay Flight 130BHW at 24%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).