2026 Jayco Seismic 399

New Toy Hauler in Duncansville, Pennsylvania, 16635

$108,995.00

Unit Specs

  • In Stock
  • New Arrival
  • Stock #E0260-25
  • Year2026
  • ManufacturerJayco
  • Make Jayco
  • ModelSeismic
  • Floorplan399
  • Floorplan LayoutBath and a Half
    Front Bedroom
  • Type Toy Hauler
  • Secondary Type Fifth Wheel
  • ConditionNew
  • Length45' 11"
  • Width8' 6"
  • Height13' 2"
  • VIN1UJCGSCV8T18M0053
  • MSRP $140,004.00
  • Price $129,995.00
  • Sale Price $108,995.00
  • Need to know your payment? Use our RV Loan Calculator!
  • Sleeps9
  • Water Capacity (Fresh)106 gal
  • Water Capacity (Black)87 gal
  • Water Capacity (Grey)87 gal
  • Air Conditioners3
  • A/C Spec45000 BTU's
  • Slideouts3
  • Payload Capacity4675 lbs
  • Dry Weight15,725 lbs
  • Tow/Hitch Weight3370 lbs
  • # Axles3


Customer Value Package, Five Star Handling Package, Half Bath, KING BED

Added 3RD A/C in Cargo

2026 Jayco Seismic Toy Hauler – Luxury Travel Trailer with Modern Features

Discover the exceptional 2026 Jayco Seismic Toy Hauler, a premium recreational vehicle designed for thrill-seekers and outdoor adventurers alike. This new arrival in the towable RV category combines versatile living space, robust performance, and upscale amenities, making it an ideal choice for families or groups up to nine. With a length of approximately 45 feet 11 inches and a width of 8 feet 6 inches, the Seismic provides ample space and comfort for extended travels.

Impressive Features and Specifications

The Seismic is equipped with a spacious interior and advanced features, including:

  • Three air conditioners with a total capacity of 45,000 BTUs for cooling effectiveness
  • A comprehensive water system with 106 gallons of fresh water capacity, and 87 gallons each for black and grey water tanks
  • Powerful 3-slideouts that expand the living area
  • Triple axles for enhanced stability and load capacity
  • Payload capacity of 4,675 pounds and a gross vehicle weight of 20,400 pounds
  • Includes a Half Bath and a luxurious King Bed for maximum comfort

Upscale Comfort and Entertainment

The Seismic boasts a modern interior featuring a free-standing dinette with chairs, bunk beds, and a queen bed, making it perfect for family adventures. Entertainment is at the forefront with multiple amenities such as a DVD player, CD player, TV, exterior speakers, and an auxillary battery for off-grid power. The RV also includes a microwave, oven, refrigerator, stove top burner, and water heater, allowing for home-like convenience on the road.

Convenience and Safety

Designed with ease and safety in mind, this toy hauler comes with an external shower, ladder, leveling jacks, power roof vent, skylight, roof vents, smoke and CO detectors, LP detector, and a spare tire kit. The exterior is rugged and insulated, ready for various weather conditions, and features an awning for outdoor shade.

Additional Highlights

  • New in stock and ready for immediate delivery
  • Customer Value Package and Five-Star Handling Package included
  • Estimated financing options with flexible terms

Experience the perfect mix of luxury, functionality, and adventure with the 2026 Jayco Seismic Toy Hauler – the ultimate choice for those seeking fun on the road with all the comforts of home. Contact us today to learn more about this outstanding RV and start planning your next outdoor adventure!



View a video of this 2026 Jayco Seismic 399 RV on YouTube!

2026 Jayco Seismic 399 Features


  • Appliances
    Microwave, Oven, Refrigerator, Stove Top Burner, Water Heater
  • Electrical
    Air Conditioning, Auxiliary Battery, Generator
  • Equipment
    CD Player, CO Detector, DVD Player, LP Detector, Smoke Detector, TV
  • Exterior
    Awning, Exterior Speakers, External Shower, Ladder, Leveling Jacks, Power Roof Vent, Skylight, Slideout, Spare Tire Kit
  • Interior/Furnishings
    Bunk Beds, Free Standing Dinette w/Chairs, Medicine Cabinet, Queen Bed, Roof Vents, Shower, Toilet
  • 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

8

Water Capacity - Black

87 gal

Water Capacity - Fresh

106 gal

Water Capacity - Grey

87 gal

Exterior

# Awnings

2

# Axles

3

# Doors

2

# Slides

3

Hitch

Fifth Wheel

Electrical

# A/C

3

A/C Spec

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

*MFG Specs are for base unit. Certain options may change specifications listed. Please consult dealer for more details. Data is provided by a 3rd party. RVUSA.com cannot guarantee the accuracy of the data presented.

2026 Jayco Seismic 399 Literature


2026 Seismic Brochure PDF 2026 Seismic Brochure 1
Seller Info

Ansley RV

1280 Route 764
Duncansville, PA 16635

Member Since 1997

See 425 Reviews

Unit Specs

  • In Stock
  • New Arrival
  • Stock #E0260-25
  • Year2026
  • ManufacturerJayco
  • Make Jayco
  • ModelSeismic
  • Floorplan399
  • Floorplan LayoutBath and a Half
    Front Bedroom
  • Type Toy Hauler
  • Secondary Type Fifth Wheel
  • ConditionNew
  • Length45' 11"
  • Width8' 6"
  • Height13' 2"
  • VIN1UJCGSCV8T18M0053
  • MSRP $140,004.00
  • Price $129,995.00
  • Sale Price $108,995.00
  • Need to know your payment? Use our RV Loan Calculator!
  • Sleeps9
  • Water Capacity (Fresh)106 gal
  • Water Capacity (Black)87 gal
  • Water Capacity (Grey)87 gal
  • Air Conditioners3
  • A/C Spec45000 BTU's
  • Slideouts3
  • Payload Capacity4675 lbs
  • Dry Weight15,725 lbs
  • Tow/Hitch Weight3370 lbs
  • # Axles3

Estimated Payment-

Interest Rate % *(W.A.C.)
Term Years
Down Payment $
*W.A.C. = With approved credit

Email Seller

Request More Info on this 2026 Jayco Seismic 399 Offered for sale by Ansley RV
Ansley RV
Ansley RV

1280 Route 764
Duncansville, PA 16635

Phone: Click to Call

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2026 Jayco Seismic 399 Gallery

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New 2026 Jayco Seismic 399 available in Duncansville, Pennsylvania
Floorplan of 2026 Jayco Seismic 399
2026 Seismic 399 by Jayco from Ansley RV in Duncansville, Pennsylvania
New 2026 Jayco Seismic 399 available in Duncansville, Pennsylvania