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.
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.
This 2026 Jayco Seismic 399 and many other Jayco floorplans are available at Good Life RV in Webster City, IA. Give us a call today! 515-832-5715
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.
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.
This 2026 Jayco Seismic 399 and many other Jayco floorplans are available at Good Life RV in Webster City, IA. Give us a call today! 515-832-5715
| Stock # | P8M0164 |
| Location | Webster City |
| Year | 2026 |
| Make | Jayco |
| Model | Seismic |
| Trim | 399 |
| Condition | NEW |
| Secondary Class | Bunkhouse, Rear Kitchen, Toy Hauler |
| Dry Weight (LBS) | 14950 LBS |
| Hitch Weight (LBS) | 3310 LBS |
| Max Sleeping Count | Up to 8 |
| Category Class | Fifth Wheel |
| Interior Color | DUNE GRAY |
| VIN | 1UJCGSCV6T18M0164 |
| Length (FT/IN) | 39' 0" |
| Gross Weight Rating (LB/KG) | 20400 LBS |
| Total Fresh Water Tank Capacity (GAL/L) | 106 |
| Total Gray Water Tank Capacity (GAL/L) | 87 |
| Total Black Water Tank Capacity (GAL/L) | 87 |
| Number Of Slideouts | 3 |
| General | |
|---|---|
| Exterior Color | WHITE |
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