2025 Jayco Seismic 399 - AVA145A
For Sale in Montclair, CA.

MSRP: $114,996
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  • PRIMARY INFORMATION

  • Stock #AVA145A
  • Year2025
  • ManufacturerJayco
  • MakeJayco
  • ModelSeismic
  • Floorplan399
  • TypeFifth Wheel
  • ConditionUsed
  • Length45' 0"
  • VIN1UJCGSCV6S18M0180
  • MSRP$114,996.00
  • Sale Price$97,999.00

  • SPECS

  • Sleeps9
  • Water Capacity (Fresh)106 gal
  • Water Capacity (Black)87 gal
  • Water Capacity (Grey)87 gal
  • GVWR20,400 lbs
  • Slideouts3
  • Payload Capacity20,400 lbs
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Description

2025 Jayco Seismic 399

Unleash your inner thrill-seeker with the 2025 Jayco Seismic 399, a robust fifth wheel toy hauler built for adventure. Available at Giant RV, this Seismic 399 features a 102" wide-body steel I-beam frame, three slide-outs, and a 14,950 lb. dry weight with a 3,750 lb. payload. With a 13'6" garage and luxury amenities, it’s perfect for RV camping.

  • Queen Bed Slide: Front bedroom with a 60" x 80" queen bed, wardrobe, and dresser, sleeping up to 9 with convertible sofas and a loft.
  • Spacious Garage: 13'6" toy hauler with a party deck, convertible sofas, queen bed, and half bath for versatile use.
  • Modern Kitchen: Features a 16 cu. ft. 12V refrigerator, 21" oven, 30" microwave, and residential sink for gourmet meals.
  • Off-Grid Ready: Equipped with a 400W solar package, 6,000W Yamaha generator, and 20' power awning for camping.

Visit Giant RV to explore the 2025 Jayco Seismic 399 and kickstart your next adventure with unmatched style and versatility! 

Giant RV

9150 Benson Avenue
Montclair, California


Phone: 909-414-0437

View All Listings by Giant RV

Contact Giant RV

Documents


2025 Jayco Seismic Brochure 1

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