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Jayco Seismic 395

Fifth wheelbuilt 2023– (in production)Mixed build tierCommon on the used market
WHAT ONE COSTS
$133,000MSRP today

Still in production. A used 2023 would run roughly $78,500.

WHAT IT WEIGHS BEHIND YOUR TRUCK
~17,759 lbestimated as towed, for 2 people

dry weight 16,075 lb + fresh water (106 gal, full) 884 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 around19,735 lb (10% margin)
GVWR (the sticker maximum)21,000 lb
Tongue weight, loaded~3,811 lb (21%)
Cargo capacity4,925 lb
WHICH TOW VEHICLES IT FITS: 15 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 395's published weights changed mid-run. Fifth wheels also need a pickup bed and are held to the fifth-wheel rating where published.

VEHICLETOW RATINGVERDICT
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 lb2023 model years fit
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-250 Super Duty (6.7 diesel, gooseneck) '20-2222,800 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 2500 (6.7 Cummins HO) '19-2620,000 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 80it doesn't fit

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

THE SPECS
Length45.7 ft
Height (incl. A/C)13.3 ft
Width8.5 ft
GVWR21,000 lb
Dry weight16,075 lb
Dry tongue weight3,450 lb
Cargo capacity4,925 lb
Sleeps7
Fresh water106 gal
Grey water87 gal
Black water87 gal
Solar (standard)400 W
Awning21 ft

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

WHERE PEOPLE SLEEP
  • 1× Front bedroom king(Permanent)—
  • 1× HappiJac electric-lift queen in garage(Stow-away)—
  • 2× Garage opposing convertible sofas(Convertible)—
  • 1× Free-standing dinette(Convertible)—
HOW IT'S BUILT: 4/5
WallsLaminated fiberglass
FrameSteel
RoofWalk-on
UnderbellyEnclosed

Jayco (Mixed tier): Jayco

YEAR BY YEAR: WHAT CHANGED
YEARSGVWRDRYMSRP
202321,000 lb14,935 lb$133,043
202521,000 lb15,210 lb$133,043
202621,000 lb15,735 lb$133,043
  • 2023Introduced
  • 2027GVWR 21,000 lb; UVW 16,075 lb; CCC 4,925 lb
FINDING ONE

Common: usually several for sale within a day’s drive. Why: Jayco is a volume manufacturer; still in production. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

13'6" garage and a 21,000 lb GVWR — the heavy hauler of the line, and it needs a dually.

OTHER SEISMIC FLOORPLANS
359 · 17,500 lb · sleeps 6399 · 21,000 lb · sleeps 8403 · 16,500 lb · sleeps 7405 · 16,955 lb · sleeps 9413 · 20,800 lb · sleeps 6the whole line →
Find one for sale

Live listings for the 395 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 Seismic line ↗

Is the 395 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.