2026 Jayco Seismic 399

New Fifth Wheel in Katy, Texas, 77494

$108,995.00

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New 2026 Jayco Seismic 399 available in Katy, Texas

2026 Jayco Seismic 399 - New Fifth Wheel For Sale by Blue Compass RV Katy in Katy, Texas

2026 Seismic 399 by Jayco from Blue Compass RV Katy in Katy, Texas

Unit Specs

Stock #T129670
Year2026
ManufacturerJayco
Make Jayco
ModelSeismic
Floorplan399
Type Fifth Wheel
ConditionNew
Length46' 0"
VIN1UJCGSCV2T18M0128
Price $143,024.00
Sale Price $108,995.00
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Sleeps4

Looking to buy a 2026 Jayco Seismic Fifth Wheel RV?

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This 2026 Jayco Seismic 399 is the perfect rig for your adventures and explorations. Ready to be a proud Jayco owner? This 2026 Jayco Seismic 399 is the perfect fit. If you’re looking for a family RV, you’ve found it: this rig sleeps 4.

2026 Jayco Seismic 399 Features

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

Water Capacity - Black

87 gal

Water Capacity - Fresh

106 gal

Water Capacity - Grey

87 gal

Exterior

# Awnings

# Axles

# Doors

# Slides

Hitch

Fifth Wheel

Electrical

# A/C

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.