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Jayco Jay Flight Bungalow 40FKS

Travel trailerbuilt 2011–15Mixed build tierFindable on the used market
WHAT ONE COSTS
$21,800est. used (2015, 11 yr old)

Sticker was $42,521 in 2014. Out of production since 2015, so the used market is the only way to buy one. Estimate assumes a 2015 unit.

WHAT IT WEIGHS BEHIND YOUR TRUCK
~11,445 lbestimated as towed, for 2 people

dry weight 10,245 lb + fresh water (48 gal, full) 400 lb + propane + battery 200 lb + gear for 2 600 lb. Brochure dry weight omits water, propane, batteries and your gear; this estimate doesn't.

You want a tow rating around12,720 lb (10% margin)
GVWR (the sticker maximum)12,500 lb
Tongue weight, loaded~1,732 lb (15%: high, eats payload)
Cargo capacity2,255 lb
WHICH TOW VEHICLES IT FITS: 24 OF 95

Judged the way the app judges: estimated loaded weight against each vehicle's rating less a 10% margin, per model year, because the 40FKS's published weights changed mid-run.

VEHICLETOW RATINGVERDICT
Chevrolet Silverado / GMC Sierra 1500 (6.2 V8, max tow) '19-2613,300 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax, max tow) '24-2622,500 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '20-2318,510 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '11-1918,100 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '20-2636,000 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '11-1923,300 lbfits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '24-2613,500 lbfits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '15-2013,200 lbfits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '21-2314,000 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, gooseneck) '20-2222,800 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, tow pkg) '17-1918,000 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel) '11-1616,600 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 HO diesel, gooseneck) '23-2623,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '17-1932,500 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '20-2237,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '11-1621,600 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2638,000 lbfits, loaded, with 10% margin
Ford F-450 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2640,000 lbfits, loaded, with 10% margin
Ram 1500 (5.7 Hemi eTorque, max tow) '19-2412,750 lb2015 model years fit
Ram 2500 (6.7 Cummins HO) '19-2620,000 lbfits, loaded, with 10% margin
Ram 2500 (6.7 Cummins) '11-1817,980 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins DRW, gooseneck) '13-1831,210 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '25-2636,610 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '19-2437,090 lbfits, loaded, with 10% margin
The 71it doesn't fit

These verdicts assume 2 people aboard with typical gear. See the margin for your truck and your crew →

THE SPECS
Length40.9 ft
Height (incl. A/C)12.7 ft
Width8.5 ft
GVWR12,500 lb
Dry weight10,245 lb
Dry tongue weight1,550 lb
Cargo capacity2,255 lb
Sleeps4
Axles2
Fresh water48 gal
Grey water65 gal
Black water32.5 gal

A missing row means the maker never published that figure: unknown, not zero.

WHERE PEOPLE SLEEP
  • 1× Front queen bed (72×80 king optional)(Permanent)60×80
  • 1× Hide-a-bed sofa / dinette(Convertible)—
HOW IT'S BUILT: 2/5
WallsWood frame + siding
FrameWood
RoofWalk-on
UnderbellyEnclosed

Jayco (Mixed tier): Jayco's 40-foot destination trailer — wood-stud walls with aluminum skin on a 12-inch steel I-beam frame, residential fittings inside; the 2-year limited warranty and dealer coverage offset the budget wall build.

YEAR BY YEAR: WHAT CHANGED
YEARSGVWRDRYMSRP
2011–1412,500 lb10,530 lb$42,521
201512,500 lb10,245 lb$42,521
  • 2011Introduced
  • 2014UVW 10,530 lb, sleeps 4-6
  • 2015Final model year; UVW 10,245 lb
FINDING ONE

Findable: a few listed nationwide most weeks. Why: Jayco is a volume manufacturer; 11 years out of production. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

Front-kitchen couples plan: the galley faces the front window wall, the living room takes the middle.

OTHER JAY FLIGHT BUNGALOW FLOORPLANS
401FLTS · 12,000 lb · sleeps 4401LOFT · 13,400 lb · sleeps 8402DLFT · 14,500 lb · sleeps 7402RLTS · 13,500 lb · sleeps 4404LOFT · 13,600 lb · sleeps 840BHQS · 13,000 lb · sleeps 1040BHS · 12,500 lb · sleeps 1040BHTS · 13,000 lb · sleeps 840DBTS · 12,500 lb · sleeps 840DLFT · 14,500 lb · sleeps 740FBTS · 13,000 lb · sleeps 440FER · 12,500 lb · sleeps 440FKDS · 13,000 lb · sleeps 440FSDS · 12,500 lb · sleeps 4the whole line →
Find one for sale

Live listings for the 40FKS on the big marketplaces. Each search opens pre-filled with this exact floorplan:

RV Trader ↗Camping World ↗FB Marketplace ↗Google ↗

Inventory varies by site and day. Slim pickings? search the whole Jay Flight Bungalow line ↗

Is the 40FKS your #1, or just a spec sheet?

These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about. Set your priorities as sliders, switch on your hard limits, and watch the whole market re-rank around them. Every exclusion explained, every margin shown.

See where it ranks for you →

Data compiled from manufacturer spec sheets, retrieved 2026-07.