Seismic Toy Hauler

2026 Seismic Toy Hauler

Starting at $112,905

The 2026 Jayco Seismic Toy Hauler is built for adventure, offering rugged durability and high-end comfort for all-season camping. With Climate Shield™ zero-degree tested weather protection, a 35,000 BTU furnace, and double-layer fiberglass batt insulation, you’ll stay comfortable in any climate. The fully enclosed and heated underbelly ensures peace of mind even in freezing conditions.

Built on a 102 in. wide structural steel I-beam frame, the Seismic features Stronghold VBL™ aluminum-framed walls, a Magnum Truss™ Roof System, and an Alpha roof membrane with a limited lifetime warranty. Reaching your destination is effortless with the 5-Star Handling Package, which includes Dexter® Axles with ABS and Tow Assist, 17.5 in., 16-ply "H" rated Cooper tires, and the MorRyde CRE 3000 Suspension System for a smooth, controlled ride.

Power is never an issue with the NPS-powered Yamaha 6,000W generator and the Overlander II Solar Package featuring two roof-mounted 200W solar panels, 30AMP Digital PWM Solar Controller, and an 1800W inverter. Inside, residential-style luxury awaits with an Olympic 66” x 80” bed, handcrafted hardwood cabinetry, and a SuperSofa or theater seats with heat, massage, and LED lighting (select models). The kitchen boasts a residential refrigerator, 30-inch space-saver microwave, and a residential 21-inch oven.

The garage is built for versatility, featuring HappiJac® electric-lift queen beds/convertible sofas, a Tuff-ply rubberized floor liner, and three-seasons removable wall/doors. Outdoor living is maximized with a rear ramp patio kit, anti-slip flooring, and a rear electric patio awning. Select models also offer an outside HALO griddle with JayPort® LP quick-connect.

Tech-savvy conveniences include a 4K Smart LED HDTV, touch-screen Bluetooth® stereo, and a Keyed-Alike™ lock system. With a blend of durability, luxury, and cutting-edge technology, the 2026 Jayco Seismic Toy Hauler is ready for your next great adventure.

Seismic 399 interior
Seismic 399 living area
Seismic 399 kitchen
Seismic 399 bedroom
Seismic 399 bathroom MORE PHOTOS
Seismic 399 garage seating
Seismic 399 garage
Seismic Metallic Copper full-body paint
Seismic Metallic Blue full-body paint
Seismic Titanium full-body paint
Seismic Charcoal full-body paint
Seismic party deck with stairs
Seismic party deck with stairs
Seismic party deck with stairs
Seismic party deck with stairs
Seismic Toy Hauler

Seismic Toy Hauler Floorplans and Prices

With four floorplans ranging from 41′ 8″ to 47′ 3″, the 2026 Seismic Toy Hauler lineup is built for those who want the perfect mix of rugged hauling power and residential comfort. Each floorplan is designed for flexibility, with large cargo areas that quickly transform into entertaining spaces thanks to the party deck and stairs. Inside, you’ll find residential-style features including king-size beds, spacious walk-in showers, and multiple seating options like theater seating, tri-fold sofas, rear convertible sofas and cargo tables. The 399 floorplan even offers a convenient half-bath layout option in the garage area. Well-appointed kitchens and luxurious master bedrooms round out these versatile designs, making Seismic the ultimate choice for adventures that demand both utility and style.

Starting at $112,905
Sleeps up to 8
Length 41' 8" - 47' 3"
Weight 13,390 - 15,985 lbs.

See Floorplans »

Standard Features and Options

Standard Exterior Equipment

  • 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
  • Climate Shield™ zero-degree tested weather protection includes:
    • 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)
  • HELIX Cooling System™ (industry exclusive) includes:
    • 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
  • Pass-through storage with Slam-latch™ baggage doors
  • Under-mounted spare tire
  • Fully enclosed, LED-lighted universal docking center with:
    • Black tank flush
    • Winterization and sanitation hookups
    • Quick-connect outside shower
    • Satellite prep

Standard Interior Equipment

  • Olympic king bed (359 & 413)
  • Residential quilted bedspread
  • Gas-strutted under-bed storage
  • Washer/dryer prep
  • 12V charging station
  • Bathroom skylight
  • Central command center with built-in tank monitoring
  • Custom interior design (Dune Gray)
  • LED interior lighting throughout
  • LED fireplace with electric space heater (select models)
  • No in-floor heat registers throughout the coach
  • Vinyl flooring in slideouts (no carpet)
  • Residential vinyl flooring (made in the USA)
  • Hardwood safety handrail on hallway steps
  • Carbon monoxide and LP detector
  • 5/8 in. tongue-and-groove joined plywood main floor decking and 3/8 in. tongue-and-groove plywood roof decking
  • Handcrafted and glazed doors, drawers, and trim
  • Solid hardwood cabinet doors
  • Residential finished dovetail-jointed drawers throughout
  • Heavy-duty, 75 lb., full-extension, steel ball-bearing drawer guides
  • SuperSofa™ or theater seats with heat, massage, and LED lighting (select models)
  • Stain-protected fabric on all furniture
  • Residential “Do it all” sink with pull-out kitchen faucet, glass rinse, and vegetable rinse
  • Porcelain foot-flush toilet
  • Inverter pre-wire

 

Customer Value Package (Mandatory)

  • 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 (Mandatory)

  • 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)

Ramp and Cargo Equipment

  • 30 gal. fuel tank with timer
  • Garage D-rings mounted to steel frame
  • HappiJac® electric-lift queen beds/convertible sofas with folding armrests and cup holders
  • Three-season removable garage wall/doors
  • Tuff-ply™ rubberized garage floor liner
  • Rear ramp door and patio with anti-slip, non-skid flooring
  • Ramp patio kit with exterior steps
  • Rear electric patio awning
  • LED high-intensity ramp lights
  • Ram air vents and power roof vent

Options

  • Frameless, dual-pane, tinted safety-glass windows
  • Outside HALO™ griddle for outside kitchens or JayPort® system (includes LP quick-connect) (select models)
  • Queen residential foam-top mattress (395 & 399)
  • Retractable half-bath wall in garage (395 & 399)

Standard Features
and Options

See all »
Overlander Packages

Overlander Packages

Solar Capabilities

Solar power offers RVers newfound freedom when it comes to their camping experiences by allowing users to break away from shore power constraints. Jayco RV now offers varying levels of optional solar packages on travel trailers, fifth wheels and toy haulers. Your next RV can come equipped with solar prep or optional solar packages. 

Learn More »

Superior Construction Elements

(Click on number for more information)

Cutouts
1
2
3
4
5
6
7
8
9
10
11
12

The 102 in. widebody design maximizes interior room and livability.

With the added power conversion of two 200-watt solar panels, a consistently regulated charge from our 30AMP MPPT RV-C Solar Controller and the added assurance of energy compatibility from a 1800W Pure Sine Wave RV-C Inverter, the Overlander II solar package gives the necessary power to run small amenities on the RV worry-free all through solar energy. 

Three high-efficiency air conditioners deliver whole-coach cooling performance with enhanced efficiency.

The Dicor® PVC roof membrane delivers advanced, low-maintenance protection designed for long-term performance.

Jayco uses plywood vs. OSB or other materials because it is more eco-friendly (no formaldehyde), handles moisture better, is lighter in weight and has better screw retention.

The Magnum Truss™ Roof system is one of the strongest roofs in the industry. It's capable of withstanding 50 percent more weight–up to 4,500 lbs. more than the competition–so that you can safely perform maintenance and avoid costly structure damage from debris, branches or snow. 

The automotive-painted front cap with clear coat offers a deep, high-gloss finish designed to stand up to the elements.

Paired together with the 17.5 in. 16-ply H-rated tires, the Anti-Lock Braking System with anti-sway features give you peace of mind while traveling to your destination. Bosch tested and proven reputation for hassle-free operation.

Jayco uses plywood vs. OSB or other materials because it is more eco-friendly (no formaldehyde), handles moisture better, is lighter in weight and has better screw retention.

The MORryde® CRE-3000™ suspension with 4,000-lb. springs reduces vibration and impact for improved towing comfort.

JaySMART™ (Safety Markers and Reverse Travel) lighting adds several tow vehicle-controlled exterior lights to indicate turning, braking, reverse travel and hazard situations. It syncs up seamlessly with your tow vehicle’s signal, no adjustments or special connections are required. 

The rear ramp patio with stairs and lift assist offers smooth, assisted operation and transforms the rear of the coach into an elevated outdoor living area.

You May Also Like

Seismic Travel Trailer

2026 Seismic Travel Trailer

Length 28' 1" - 28' 1"
Weight 7,785 - 7,785 lbs.

Learn More » Browse Floorplans »

Your Saved Floorplans

Click the star on a floorplan page to save and compare.

Browse All Floorplans