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2026 Jayco Seismic 399
NewStock #2601774
Listing price
2026 Seismic 399
Other floor plans with a similar body style, feature mix, and price range, prioritizing other manufacturers and brands.
What sells people on the Jayco Seismic 399 is the combination of a serious garage and genuine living space, all wrapped into one 46-foot fifth wheel. The bath and a half is the quiet hero here, giving your crew a second toilet so the main bath stays free, and two entry doors keep foot traffic flowing between the garage and the front bedroom. It sleeps eight and carries a hefty payload, so the gear comes along without a fight. If you're shopping used, it's worth giving the plumbing, hydraulics, and finish work a close look before you buy.
Length
45 ft 11 in
Dry weight
14,560 lbs
GVWR
20,400 lbs
Sleeps
7
Many factors play into a unit's listing price and what you should pay. This guide provides a ballpark estimate, but it does not factor in your exact scenario or how different listings are equipped.
$79,995 – $112,995
This unit is ranked 17 of 56 by asking price in this group.
The listing price on this unit has changed 12 times.
See the complete price timeline and the rest of this unit's pricing insights.
Camping World
Georgetown, KY
Shop the 2026 Jayco Seismic 399 - Stock #2601774. It is currently available at Camping World in Georgetown, KY.
Other listings for this floor plan, ranked by condition, model year, distance, price, and listing quality.
