2026 Jayco Seismic 399

New Toy Hauler in Cross City, Florida, 32628

$89,898.00

Est. Payment: $729/mo

Photos (28)

New 2026 Jayco Seismic 399 available in Cross City, Florida

2026 Jayco Seismic 399 - New Toy Hauler For Sale by Couch Family RV in Cross City, Florida features Water Heater, Washer/Dryer Prep, Washer, Furnace, Heated Underbelly

2026 Seismic 399 by Jayco from Couch Family RV in Cross City, Florida

Unit Specs

Blow Out Price
In Stock
Special

Stock #10654
Year2026
ManufacturerJayco
Make Jayco
ModelSeismic
Floorplan399
Floorplan LayoutFront Bedroom
Mid Kitchen
Mid Living Area
Type Toy Hauler
ConditionNew
Length45' 8"
Width8' 6"
Height13' 3"
VIN1UJCGSCV8T18M0148
MSRP $146,668.00
Price $93,898.00
Sale Price $89,898.00
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Sleeps8
Water Capacity (Fresh)106 gal
Water Capacity (Black)87 gal
Water Capacity (Grey)87 gal
Air Conditioners3
A/C Spec13,500 BTU soft-start, high-efficiency, ducted A/C
Refrigerator Capacity17 ft³
Slideouts3
Payload Capacity5450 lbs
Dry Weight14,950 lbs
# Axles3

Looking to buy a 2026 Jayco Seismic Toy Hauler RV?

Make memories together as a family with this 2026 Jayco Seismic 399! By owning this 2026 Jayco Seismic 399, you’re joining the Jayco family! This rig sleeps 8, so it makes the perfect family RV. With three slides, this rig feels roomy and spacious inside. It doesn’t matter whether you are cooking for one or an entire campground, this kitchen has everything you need with the fridge, oven. The TV make it easy to spend time together as a family. You’ll wake up feeling well-rested for your adventures in your queen bed. You’ll never get too hot or too cold inside your rig thanks to the heating option. If you’re thinking of heading off grid, this rig has a 106 fresh water tank. Outside, you’ll find awning, black tank flush, detachable, heated underbelly, ladder, power roof vent, ramp, rear ramp door, roof deck, roof vent, skylight and slideout.

2026 Jayco Seismic 399 Features

Appliances
Dryer, Furnace, Microwave, Oven, Refrigerator, Washer, Water Heater
Electrical
Generator, Inverter, Solar Panel, Solar Panels
Equipment
LED HDTV, LED Lights, LP Detector, Propane, TV, TV Antenna
Exterior
Awning, Black Tank Flush, Detachable, Heated Underbelly, Ladder, Power Roof Vent, Ramp, Rear Ramp Door, Roof Deck, Roof Vent, Skylight, Slideout
Interior/Furnishings
Fireplace, Queen Bed, Shower, Toilet, Washer/Dryer Prep
Horse / Livestock / LQ / Tack
Insulated

2026 Jayco Seismic 399 Specifications

General

MSRP

$126,668

Dimensions

Height

13' 3"

Height (interior)

8' 3"

Length

45' 8"

Width

8' 6"

Weights

Dry Weight

14,950 lbs

GVWR

20,400 lbs

Payload Capacity

5,450 lbs

Capacities

Refrigerator Capacity

17 cu ft

Sleep Capacity

Water Capacity - Black

87 gal

Water Capacity - Fresh

106 gal

Water Capacity - Grey

87 gal

Exterior

# Awnings

# Axles

# Doors

# Slides

Hitch

Fifth Wheel

Electrical

# A/C

A/C Spec

13,500 BTU soft-start, high-efficiency, ducted A/C

*MFG Specs are for the base unit. Certain options may change specifications listed. Please consult dealer for more details. RVUSA.com cannot guarantee the accuracy of the data presented.