-
DRY WEIGHT 15,725 W/OPTIONS
-
HITCH WEIGHT 3,370
-
EXTERIOR LENGTH 45'11''
CUSTOMER VALUE PACKAGE
**FIVE STAR HANDLING PACKAGE **
HALF BATH
Customer Value Package
-
On-demand tankless hot water heater
-
50-amp service
-
Overlander II Solar Package: 30-amp solar controller with (2) roof-mounted 200W solar panels and a 1,800W inverter
-
17 cu. ft. 12V refrigerator
-
30 in. space-saver microwave
-
Residential 21 in. oven with three burners
-
4K Smart LED HDTV with fully digital HDMI output
-
Touch-screen Bluetooth stereo with four speakers
-
Electric patio awning with integrated RGB LED lights (multi-color with remote control)
-
MORryde strut-assisted fold-away entrance steps (main entrance)
-
Custom black, machined aluminum rims
-
Keyed-Alike lock system
-
Bathroom power vent
-
Night roller shades
-
Hidden hinges and magnet door catches on cabinet doors
5 Star Handling Package
-
17.5 in., 16-ply “H” rated Cooper tires
-
Dexter axles with ABS and Tow Assist – includes Nev-R-Adjust brakes and E-Z Lube hubs
-
MORryde CRE-3000 Suspension System
-
Rota-Flex king pin
-
Wet bolt fasteners, bronze bushings, and 4K lb. leaf springs
-
2nd electric patio awning with integrated RGB LED lights (multi-color with remote control)
Jayco Seismic toy hauler 399 highlights:
-
Party Deck
-
Queen Bed with Convertible Sofas
-
Overhead Garage Loft with Storage
-
Walk-in Shower
-
60" x 80" Queen Bed
-
4K Smart LED HDTV
Get ready for outdoor adventures in this spacious toy hauler. Your guests will have the 13' 6" garage with queen bed with convertible sofa and a loft for added sleeping space, plus there is overhead storage for your things and a side man door to come and go easily. The main living area includes dual opposing slides with an L-shaped tri-fold sofa along the roadside and your dinette and refrigerator plus pantry in the curbside slide. Head up the steps to your front private bedroom with the dual entry bath accessible from the hall and inside the master bedroom. Here you will all enjoy a walk-in shower, toilet, and vanity with a sink, plus overhead storage. The bedroom features a third slide out housing a queen bed for added floor space, plus a full front walk-in closet, a dresser, and washer/dryer prep!
One look at the Seismic toy haulers by Jayco, and you'll never go back! Each model features a custom automotive-grade vinyl exterior graphics package, a painted fiberglass front cap with built-in LED lighting, and 102" wide-body structural steel I-beam construction. You'll find the pass-through storage with Slam-Latch baggage doors will make unpacking easier than ever, and the rear ramp door/patio with anti-slip, non-skid flooring will allow you to unload your toys with no trouble at all. These toy haulers feature a three seasons garage wall/doors, a 30 gallon fuel tank with a timer, and exterior marine-grade speakers to keep the party going. The Climate Shield zero degree tested weather protection includes a 35,000 BTU furnace, PEX plumbing, and a fully enclosed and heated underbelly so you can enjoy your adventures year around. And we haven't even touched on the interior luxuries you'll find, like solid hardwood cabinet doors, residential vinyl flooring made in the USA, night shades, and more!
Specifications
Length
41 ft 9 in
Dry weight
13,405 lbs
Sleeps
6 people
Unit features & options
- 102 in. wide-body structural steel I-beam construction
- Stronghold VBL aluminum-framed and vacuum-bond laminated gel-coated fiberglass exterior walls and slide room end walls
- Magnum Truss XL6 Roof System (strongest tested roof in the industry) with Alpha roof membrane system (limited lifetime warranty)
- Painted fiberglass front cap with clear coat and built-in specialty LED lighting
- Custom automotive-grade vinyl exterior graphics package
- 35K BTU output furnace
- Double-layer fiberglass batt insulation in ceiling and floor
- Double-sided radiant barrier insulation (roof and floor)
- Fully enclosed and heated underbelly (ducted)
- NPS – Powered by Yamaha 6,000-watt generator with built-in pure sine inverter (gas/C.A.R.B. certified)
- 6-point hydraulic auto-leveling system
- Battery disconnect switch
- Detachable shore power cord
- Dual 30 lb. propane bottles with auto regulator
- Water heater bypass
- LP quick-connect
- Exterior marine-grade speakers
- Digital TV antenna
- Folding roof ladder
- LED exterior lighting package
- JaySMART (Safety Markers and Reverse Travel) LED lighting (patented)
- Three exterior-mounted 13,500 BTU soft-start, high-efficiency, ducted A/Cs (living room and bedroom)
- Directional and closeable A/C vents
- Insulated dual-duct design
Full specifications
Get more info
2026 Seismic 359
Dealer information
-
DRY WEIGHT 15,725 W/OPTIONS
-
HITCH WEIGHT 3,370
-
EXTERIOR LENGTH 45'11''
CUSTOMER VALUE PACKAGE
**FIVE STAR HANDLING PACKAGE **
HALF BATH
Customer Value Package
-
On-demand tankless hot water heater
-
50-amp service
-
Overlander II Solar Package: 30-amp solar controller with (2) roof-mounted 200W solar panels and a 1,800W inverter
-
17 cu. ft. 12V refrigerator
-
30 in. space-saver microwave
-
Residential 21 in. oven with three burners
-
4K Smart LED HDTV with fully digital HDMI output
-
Touch-screen Bluetooth stereo with four speakers
-
Electric patio awning with integrated RGB LED lights (multi-color with remote control)
-
MORryde strut-assisted fold-away entrance steps (main entrance)
-
Custom black, machined aluminum rims
-
Keyed-Alike lock system
-
Bathroom power vent
-
Night roller shades
-
Hidden hinges and magnet door catches on cabinet doors
5 Star Handling Package
-
17.5 in., 16-ply “H” rated Cooper tires
-
Dexter axles with ABS and Tow Assist – includes Nev-R-Adjust brakes and E-Z Lube hubs
-
MORryde CRE-3000 Suspension System
-
Rota-Flex king pin
-
Wet bolt fasteners, bronze bushings, and 4K lb. leaf springs
-
2nd electric patio awning with integrated RGB LED lights (multi-color with remote control)
Jayco Seismic toy hauler 399 highlights:
-
Party Deck
-
Queen Bed with Convertible Sofas
-
Overhead Garage Loft with Storage
-
Walk-in Shower
-
60" x 80" Queen Bed
-
4K Smart LED HDTV
Get ready for outdoor adventures in this spacious toy hauler. Your guests will have the 13' 6" garage with queen bed with convertible sofa and a loft for added sleeping space, plus there is overhead storage for your things and a side man door to come and go easily. The main living area includes dual opposing slides with an L-shaped tri-fold sofa along the roadside and your dinette and refrigerator plus pantry in the curbside slide. Head up the steps to your front private bedroom with the dual entry bath accessible from the hall and inside the master bedroom. Here you will all enjoy a walk-in shower, toilet, and vanity with a sink, plus overhead storage. The bedroom features a third slide out housing a queen bed for added floor space, plus a full front walk-in closet, a dresser, and washer/dryer prep!
One look at the Seismic toy haulers by Jayco, and you'll never go back! Each model features a custom automotive-grade vinyl exterior graphics package, a painted fiberglass front cap with built-in LED lighting, and 102" wide-body structural steel I-beam construction. You'll find the pass-through storage with Slam-Latch baggage doors will make unpacking easier than ever, and the rear ramp door/patio with anti-slip, non-skid flooring will allow you to unload your toys with no trouble at all. These toy haulers feature a three seasons garage wall/doors, a 30 gallon fuel tank with a timer, and exterior marine-grade speakers to keep the party going. The Climate Shield zero degree tested weather protection includes a 35,000 BTU furnace, PEX plumbing, and a fully enclosed and heated underbelly so you can enjoy your adventures year around. And we haven't even touched on the interior luxuries you'll find, like solid hardwood cabinet doors, residential vinyl flooring made in the USA, night shades, and more!
Specifications
Length
41 ft 9 in
Dry weight
13,405 lbs
Sleeps
6 people
Unit features & options
- 102 in. wide-body structural steel I-beam construction
- Stronghold VBL aluminum-framed and vacuum-bond laminated gel-coated fiberglass exterior walls and slide room end walls
- Magnum Truss XL6 Roof System (strongest tested roof in the industry) with Alpha roof membrane system (limited lifetime warranty)
- Painted fiberglass front cap with clear coat and built-in specialty LED lighting
- Custom automotive-grade vinyl exterior graphics package
- 35K BTU output furnace
- Double-layer fiberglass batt insulation in ceiling and floor
- Double-sided radiant barrier insulation (roof and floor)
- Fully enclosed and heated underbelly (ducted)
- NPS – Powered by Yamaha 6,000-watt generator with built-in pure sine inverter (gas/C.A.R.B. certified)
- 6-point hydraulic auto-leveling system
- Battery disconnect switch
- Detachable shore power cord
- Dual 30 lb. propane bottles with auto regulator
- Water heater bypass
- LP quick-connect
- Exterior marine-grade speakers
- Digital TV antenna
- Folding roof ladder
- LED exterior lighting package
- JaySMART (Safety Markers and Reverse Travel) LED lighting (patented)
- Three exterior-mounted 13,500 BTU soft-start, high-efficiency, ducted A/Cs (living room and bedroom)
- Directional and closeable A/C vents
- Insulated dual-duct design
Full specifications
Get more info
2026 Seismic 359
