Jayco Seismic 399 for Sale in London, Ontario

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  Take a Virtual Tour

  Where adventure meets luxury, you’ll find the Jayco Seismic 399 — available now at Hiemstra Trailer Sales in London, Ontario. This premium fifth wheel toy hauler is engineered for thrill-seekers who want to bring all their gear on the road while enjoying upscale comfort throughout Southwestern Ontario and beyond.

   

  The large garage space is built to accommodate ATVs, motorcycles, dirt bikes, or camping gear, and easily transitions into an additional living or sleeping area once parked. A ramp door patio system adds functional outdoor entertaining space, making every destination feel like a private resort.

   

  Inside, the Seismic 399 offers an upgraded living environment with plush seating, a modern entertainment centre, and a cozy fireplace for evenings indoors. The chef-inspired kitchen features residential-style appliances, a spacious refrigerator, solid-surface countertops, and plenty of storage — perfect for fueling up between adventures.

   

  The private master suite and well-designed bathroom create a relaxing retreat, while multiple slide-outs expand the interior for maximum living space. Jayco’s high-quality construction and ride-enhancing technology ensure long-lasting durability and stable towing performance.

   

  Hiemstra Trailer Sales proudly serves London, St. Thomas, Woodstock, Strathroy, Sarnia, and surrounding areas with expert toy hauler guidance and friendly service.

   

   

  Adventure bigger — visit us in London today to explore the Jayco Seismic 399 and browse our full lineup of Jayco toy haulers!

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  Specifications

  Sleeps	9
  Slides	3
  Length	45 ft 11 in
  Ext Width	8 ft 6 in
  Ext Height	13 ft 2 in
  Int Height	8 ft 3 in
  Exterior Color	Titanium, Metallic Red, Charcoal, Metallic Copper, Metallic Blue Full Body Paint Choices
  Hitch Weight	3370 lbs
  GVWR	20400 lbs
  Dry Weight	14950 lbs
  Cargo Capacity	5450 lbs
  Fresh Water Capacity	106 gals
  Grey Water Capacity	87 gals
  Black Water Capacity	87 gals
  Tire Size	17.5"
  Furnace BTU	35000 btu
  Generator	Yamaha 6000 Watt
  Fuel Capacity	30 gals
  Number Of Bunks	1
  Available Beds	Queen
  Refrigerator Type	12 Volt
  Refrigerator Size	17 cu ft
  Cooktop Burners	3
  Number of Awnings	3
  Garage Size	13 ft 6 in
  LP Tank Capacity	30 lbs
  Water Heater Capacity	16 gal
  Water Heater Type	Gas/Electric DSI
  AC BTU	30000 btu
  TV Info	LR 4K Smart LED HDTV
  Awning Info	21' Electric w/LED Lights, 11' Electric, 10' Rear
  Axle Count	3
  Washer/Dryer Available	Yes
  Number of LP Tanks	2
  Shower Type	Walk-In Shower
  Electrical Service	50 amp

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  Bath and a Half Two Entry/Exit Doors Front Bedroom