Contact Sales

New 2025 Grand Design Momentum 397THS

Toy Hauler Fifth Wheel

Stock #69998

Gilroy

HEAVILY DISCOUNTED!! ONLY ONE LEFT AT THIS PRICE!!

1 of 57

+57

Sleeps 4
3 Slides
Kitchen Island

Loft

44ft Long
15,600 lbs
MAGNOLIA

See All Specs

Specifications

Sleeps	4	Slides	3
Length	44 ft 2 in	Ext Width	8 ft 5 in
Ext Height	13 ft 5 in	Int Height	8 ft 5 in
Interior Color	MAGNOLIA	Hitch Weight	3375 lbs
GVWR	20000 lbs	Dry Weight	15600 lbs
Fresh Water Capacity	140 gals	Grey Water Capacity	104 gals
Black Water Capacity	104 gals	Tire Size	17.5"
Furnace BTU	40000 btu	Fuel Capacity	60 gals
Available Beds	Queen	Refrigerator Type	12V Stainless Steel
Refrigerator Size	20 cu ft	Cooktop Burners	3
Number of Awnings	3	Axle Weight	7000 lbs
Garage Size	13 ft 6 in	LP Tank Capacity	30 lbs
Water Heater Type	On Demand	AC BTU	30000 btu
TV Info	LR 49" LED TV, BR LED TV, Garage 32" LED TV	Awning Info	14', 12' & 10' Power w/LED Lights
Axle Count	3	Washer/Dryer Available	Yes
Number of LP Tanks	2	Shower Type	Shower w/Seat
Electrical Service	50 amp	VIN	573FM4636SBB03109

Description

Grand Design Momentum fifth wheel toy hauler 397THS highlights:

Dual Entry
Two Full Baths
Kitchen Island
13' 6" Separate Garage
Island with Bar Stools
Flip-Up Pet Dish in Garage

Load up your toys, your clothes and food and start your adventure as you smoothing tow this fifth wheel to your campsite. You will enjoy the Fast Ramp rear ramp door, the Ram-Air garage vents on both sides, and the 2,500 lb. rated flush-mount tie-downs to keep your toys secure. You will surely appreciate the full bathroom and LED TV, plus the option to add Happi-Jac rollover sofas/table with a top bed. The main area provides a living and kitchen area with a 49" LED TV and a fireplace, theatre seating and a free standing dinette, plus full kitchen amenities. There is also a new Smart Sink with a removable cutting board, produce strainer and glass rinser you are sure to love. Head up front to use the full bathroom with a one-piece fiberglass shower with a glass door and teak seat, and fall quickly to sleep on your own queen bed or choose a king option in the front bedroom.

The Momentum fifth wheel toy haulers by Grand Design are built for four seasons of travel with your off-road toys and include luxurious accommodations throughout for extreme living! Each is constructed to a superior standard with the thermal roof design, the full-laminated walls, and the triple insulated garage floor. The MORryde CRE3000 suspension system and rubber pin box, plus the upgraded axle hangers provide the performance and smooth towing you desire, while the interior offers luxury such as color changing LED accent lighting, raised panel hardwood cabinet doors with hidden hinges, and a central vacuum system. Each toy hauler also includes four packages, including the Garage Package with Tuff-Ply gas and oil resistant flooring, the Weather-Tek Package with a Stealth AC System, and the Interior Luxury Package with solid surface countertops!

Options:

20 CU FT 12V REFRIGERATOR
3RD A/C
3RD A/C PREP
3RD AWNING
7K AXLE W/ABS DRUM BRAKES
AUXILLARY FRESH WATER TANK
BEDROOM A/C
EXTERIOR ENTERTAINMENT CENTER
EXTERIOR PKG
GARAGE PKG
GEN II 3 SEASON DOOR
HAPPI-JAC ELECTRIC BUNK
HEAT PUMP A/C
INTERIOR PKG
KING BED UPGRADE
MOMENTUM PATIO CHAIRS
REAR ALUMINUM DECK SYSTEM
ROCKFORD FOSGATE STG 1
RVIA SEAL
SAFERIDE RV ROADSITE
SOLAR ½ PKG
TRAVLFI ON-BOARD WIFI
UNDER UNIT LED LIGHT KIT
UPGRADED COOPER H RATED TIRES
WEATHER-TEK INSULATION PKG
YAMAHA GENERATOR

Features

Standard Features (2025)

Exterior

Keyed Alike™ Ramp Door Latches
2nd Patio Awning w/ LED Lights
3rd Awning w/ LED Lights (Main Slide - 397THS & 410TH)
Interior Color Changing LED Accent Lighting
High-Gloss Gel Coat Exterior Sidewalls
Door Side Exterior Spray Port
Frameless Tinted Windows
Walk-On Roof
17.5" Spare Tire (Undermount)
MORryde Strut Assist Entry Step
Slam-Latch Baggage Doors
Mo-Secure

Construction

101" Wide Body Construction
5-Side Aluminum Cage Construction
Fully Enclosed and Heated, Underbelly and Storage Area

Running Gear

Upgraded Axle Hangers
Heavy Duty H-Rated Tires
Heavy Duty 7,000 lb. Axles with ABS Brakes
17.5" H-Rated Aluminum Wheels
MORryde® CRE3000 Suspension System
Tow Assist ABS & Sway Mitigation System

Frame & Chassis

6-Point Hydraulic Leveling System
MORryde® Pin Box
101" Wide Body Super Chassis w/Drop-Frame Storage

Interior

Interior Color Changing LED Accent Lighting
Hardwood Cabinet Doors w/Hidden Hinges
Sofa w/Headrest (Includes Heat, Massage & LED Lighting Package
Central Vacuum System w/ Tools and Dust Pan
Plywood Drawer Bottoms

Kitchen

Microwave
Residential Kitchen Faucet
Professional Grade Stainless Steel Cooktop
12-Volt High Power MaxxAir w/Rain Sensor
Window Behind Range
Kitchen Barstools w/ Extended Countertops (397THS, 399TH, 410TH only)
Smart Sink w/Removable Cutting Board, Produce Strainer and Glass Rinser

Electrical

Solar Prep (10 gauge wiring with universal MC4 connectors)
75 Amp Converter
12V Battery Disconnect

HVAC

12V High Power Fan (Kitchen)
35k BTU High Capacity Furnace
Fireplace w/ 5,000 BTU Electric Heater
StealthAC Smart AC System
Attic Vent
High Capacity Heat Ducts

Plumbing

Exterior Spray Port (Door Side)
12V Tank Heaters
Sewer Hose Storage Area
Whole House Water Filtration System
All-In-One Enclosed and Heated Utility Center

Bedroom

Under Bed Storage Area (N/A 376THS)
Individually Switched Reading Lights Over Bed
Bedside 110-Volt & USB Outlets
Window Above Master Bed Headboard
60" X 80" Queen Bed Pillow Top Bed Mattress

Bathroom

Skylight Above Shower
Porcelain Toilet
Medicine Cabinet w/Mirrored Door (N/A 410TH)
Undermount Lav Sink
One-Piece Fiberglass Shower w/Glass Door & Teak Bench Seat

Appliance

Fireplace with Electric Heater
Stainless Steel 20 Cu. Ft. Refrigerator
30" Over-The-Range Microwave

Electronics

OneControl™ System
Back-Up Camera Prep
Exterior Cable/SAT Plug-In
LED Smart TV in Living Area
LED TV in Bedroom
Rockford Fosgate Stereo Entertainment System w/HDMI and App Controls
Exterior Speakers
No-Crank Digital TV Antenna w/Booster
LED TV in Garage (N/A 376THS)
TravlFi On-Board WiFi Ready

Packages

Exterior Package

Satellite TV Prep (All TV Locations)
MORryde Strut Assist Entry Step
Aluminum Quad Steps - Garage Entry (N/A 376THS)
7,000 lb. Axles w/ ABS Drum Brakes
17” Aluminum Wheels (120PSI Rated)
Cooper Tires® 17.5" All-Steel H-Rated Tires
Slam-Latch Baggage Doors
Frameless Tinted Windows
Exterior Security Lights
Power Patio Awning w/LED Lighting
Folding Roof Ladder
White Gel Coat Fiberglass Front Cap
12V Battery Disconnect
All-In-One Exterior Utility Center
50 Amp Service
Converter
Enclosed Fuel Station w/ Dual Fuel Tank (Single Tank 376THS)
Full Paint Gel Coat Fiberglass Front Cap (376TH, 397TH, 399TH only)

Luxury Interior Package

49" Class LED TV in Living Area
Stereo Entertainment System w/Bluetooth and App Based Controls in Living Area
Washer/Dryer Prep
12 Gallon Gas/Electric Water Heater
Roller Shade Window Coverings (Main Living Area and Bedroom)
Recessed LED Puck Lighting
Solid Surface Countertops w/ Sink Covers
Stainless Steel Undermount Kitchen Sink
Chef Inspired Range & Oven w/ Cover
Kitchen Pantry w/ LED Light Strip
Garage Control Panel (N/A 376THS)

Garage package

32" Class LED TV in Garage (397TH and 399TH only)
Protective Diamond Plate on Garage Sidewalls
2,500 lb. Rated Flush-Mount Tie-Downs
Ram-Air Garage Vents Both Sides (N/A 376THS)
Tuff-Ply Gas and Oil Resistant Garage Flooring
Fast Ramp Rear Ramp Door (N/A 376THS)
Triple Insulated Garage Floor (N/A 376THS)

Weather-Tek Package

R-Value Equivalent (R-40 Roof / R-45 Floor / R-11 Sidewalls / R-40 Garage Floor / R-24 Slide room Floor)
Fully Enclosed and Heated, Underbelly and Storage Area
Enclosed and Heated Low Point Drains
Engineered Underbelly Airflow Heat Paths
Stealth AC System w/ Insulated A/C Ducts
Attic Vent
Plumbing Line Insulation Barrier

See us for a complete list of features and available options!

All standard features and specifications are subject to change.

All warranty info is typically reserved for new units and is subject to specific terms and conditions. See us for more details.

Due to the current environment, our features and options are subject to change due to material availability.

Favorite RVs

Save your favorite RVs as you browse. Begin with this one!

Cheryl has been super helpful
"We are extremely happy with the service we have been provided by the team at Happy Daze, specifically Cheryl and her team of Doug and Hal in the service department. We also enjoyed working with Dave Waldon in Sales. Cheryl has been super helpful, suggested some techniques and processes that saved us ... More »

David
Excellent experience
"We drove to Livermore Happy Daze from over three hours away and when we arrived we were greeted by both Suzie and Doug both of whom were excellent to work with and were very helpful.We would definitely recommend them to anyone who is looking for a Trailer or motor home. "

Jeff
Great service department!!
"We discovered some bubbles in the rear fiberglass panel after about 9 months after we purchased the 5th wheel from Happy Daze. A call from Tara, service rep extraordinaire, about our warranty coming to a close, we decided to get it in for repair. Jeff , service tech, did a great job replacing the whole ... More »

Anonymous

We are here to help, call us at
408-842-2221 or Contact Us

We are here to help!

408-842-2221
Contact Us
Contact Sales

Happy Daze RV is not responsible for any misprints, typos, or errors found in our website pages. Any price listed excludes sales taxes, registration, tags and delivery fees. Manufacture pictures, specifications, and features may be used in place of actual units on our lot. To preserve the quality and mileage of our coaches, we only do test drives with a qualified offer to purchase.

New 2025 Grand Design Momentum 397THS

397THS Floorplan

Specifications

Description

Features

Connect with us!