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New 2025 Grand Design Momentum M-Class 392M

Toy Hauler Fifth Wheel

Stock #99252

Mesa, AZ

Includes $36,481 in options. Enjoy movie nights on the super sofa with cupholders and recliners, positioned directly across from the fireplace and entertainment center.

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Description

The 2025 Grand Design Momentum M-Class 392M redefines what it means to travel in luxury while catering to the thrill of outdoor adventures. This fifth wheel toy hauler blends Grand Design’s reputation for craftsmanship with practical, high-end features, perfect for families or couples who need plenty of space for toys and gear without sacrificing comfort. Whether you’re hitting the trails with your ATV or relaxing at a campground, the Momentum 392M has you covered.

Key Features of the Momentum M-Class 392M:

13' Garage: With an expansive 13-foot garage, this toy hauler is designed to haul your motorcycles, ATVs, or other outdoor equipment with ease. Once you’ve unloaded, convert the space into a guest suite or extra lounging area with the optional Happi-Jac rollover sofas and a top bed.
Spacious Living Area: Enjoy movie nights on the super sofa with cupholders and recliners, positioned directly across from the fireplace and entertainment center. The open layout ensures there’s plenty of room for everyone to relax after a long day of fun.
Master Suite with King Bed: Retreat to the front private bedroom featuring a luxurious king-sized bed, massive wardrobe, and space for an optional washer/dryer, making it feel like a true home away from home.
Two Full Bathrooms: The 392M comes equipped with two full bathrooms, one located in the garage for easy cleanup after outdoor activities and the other in the main living area for maximum convenience.
Fully Equipped Kitchen: With a large four-burner range, oversized refrigerator, solid surface countertops, and an island with a deep stainless-steel sink, the kitchen in the Momentum 392M rivals that of a luxury home.
Patio System: The rear ramp door transforms into an outdoor patio, complete with railings and optional steps—perfect for relaxing outside while enjoying scenic views.

Off-Grid and All-Weather Capable:

This fifth wheel is built for off-the-grid camping and four-season use. The Weather-Tek insulation package ensures you’ll stay comfortable in any climate, and the three air conditioners provide cooling relief during the summer. Equipped with solar prep, a 5500W Onan generator, and large fresh water, gray, and black tanks, the 392M is ready for extended stays in remote locations.

High-End Technology and Convenience:

Stay connected and comfortable with features like the OneControl monitor panel, which allows you to control key functions like lighting, HVAC, and slides directly from your smartphone. The Rockford Fosgate sound system with indoor and outdoor speakers elevates your entertainment experience, and the 3-season garage doors provide flexibility no matter the weather.

Exterior and Construction:

Built on a robust, fully laminated frame with a 6-point hydraulic leveling system, the Momentum 392M is made for ease of use and durability. The pass-through storage offers plenty of space for additional gear, and the awning with LED lighting extends your outdoor living space, so you can enjoy the fresh air long after the sun sets.

Why Buy from Little Dealer Little Prices?

Choosing Little Dealer Little Prices means you’re investing in a seamless and enjoyable RV buying experience. Here’s why RV enthusiasts trust us:

Top-tier customer service: Our knowledgeable staff is here to help guide you through the buying process, ensuring you find the perfect RV to match your needs.
Competitive pricing: We offer the best deals without compromising on quality, so you get more value for your money.
After-sale support: From maintenance services to expert tips, we stand by you long after you drive away with your new RV.

With the 2025 Grand Design Momentum M-Class 392M, you don’t have to choose between luxury and adventure. It’s all packed into one outstanding fifth wheel toy hauler, ready to make your next journey unforgettable!

Stock 360 tour and stock images may be shown. Colors and specifications may vary.

Features

Standard Features (2025)

Exterior

Keyed Alike™ Ramp Door Latches
2nd Patio Awning w/ LED Lights
3rd Awning w/LED Lights (Main Slide-395MS)
Exterior 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 Underbelly w/Heated Tanks and Storage

Running Gear

Upgraded Axle Hangers
Heavy Duty H-Rated Tires
Heavy Duty 7,000lb. Axles with ABS Drum Brakes (381MS, 395MS)
Heavy Duty 8,000lbs. Axles with ABS Drum Brakes (351MS)
17.5" H-Rated Aluminum Wheels
MORryde® CRE3000 Suspension System
Tow Assist ABS & Sway Mitigation System

Frame & Chassis

6-Point Hydraulic Leveling System
101" Wide Body Super Chassis

Interior

Interior Color Changing LED Accent Lighting
Hardwood Cabinet Doors w/Hidden Hinges
Recliner Sofa w/Adjustable Headrest or Flip Down Cupholders
Central Vacuum System w/ Tools and Dust Pan
Plywood Drawer Bottoms

Kitchen

Microwave
Residential Kitchen Faucet
Professional Grade Stainless Steel Cooktop
12v High Power MaxxAir Fan with Rain Sensor
Window Behind Range (N/A 395MS)
Kitchen Barstools w/Extended Countertops (351MS, 381MS)
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
Stealth AC System w/ Insulated A/C Ducts
Attic Vent
High Capacity Heat Ducts

Plumbing

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

Bedroom

Under Bed Storage Area
Individually Switched Reading Lights Over Bed
Bedside 110-Volt & USB Outlets
Window Above Master Bed Headboard
60" x 80" Queen Pillow Top Bed Mattress

Bathroom

Porcelain Toilet
Medicine Cabinet w/Mirrored Door
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

Exterior Cable/SAT Plug-In
LED Smart TV in Living Area
Rockford Fosgate Stereo Ent. System w/HDMI and App Controls
Exterior Speakers
No-Crank Digital TV Antenna w/Booster
LED TV in Garage (NA 336M)
TravLFi On-Board WiFi Ready

Packages

Exterior Package

Satellite TV Prep
MORryde Strut Assist Entry Step
Aluminum Quad Entry Steps - Garage Entry
7,000 lb. Axles w/Self Adjusting Brakes, Wet Bolts and Bronze Bushings
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 336M)
Partial Paint Gel Coat Fiberglass Front Cap

Interior Package

49" Class LED TV in Living Area
Stereo Entertainment System w/Bluetooth and App Based Controls in Living Area
Washer/Dryer Prep
On Demand 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

Garage Package

32" Class LED TV in Garage
Protective Diamond Plate on Garage Sidewalls
2,500 lb. Rated Flush-Mount Tie-Downs
Ram-Air Garage Vents Both Sides
Tuff-Ply Gas and Oil Resistant Garage Flooring
FastRamp Rear Ramp Door
Triple Insulated Garage Floor

Weather-Tek Package

R-Value Equivalent (R-40 Roof / R-45 Floor / R-11 Sidewalls / R-40 Garage Floor / R-24 Slideroom 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.

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Happy Newbies
Finance department was very thorough and clear. Dave H. was super welcoming and friendly. We felt zero pressure about anything. No cheesy sale pitches.
Will gave us an amazing “head to toe” walkthrough in a super friendly and professional way. We are very satisfied and looking forward to our adventure

Johnathan from Sun City, AZ
Great service
Fast and easy ordering the RV that we wanted. No up-buy push, strait forward.

David from Phoenix, AZ
Super friendly service
They were great with us bring in our kids. Not pushy at all let us look at what we wanted with out. We got our trailer order and here. Couldn’t be happier with the service.

Ashley from Waddell, AZ

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Please contact us @ 928-350-2400 for availability as our inventory changes rapidly. Little Dealer Little Prices strives for accurate website information but is not responsible for misprints, typos, or errors on our website. Manufacturer or sample photos and specifications may be used in place of actual unit photos and specs. Monthly payments are an estimate only and do not constitute a commitment that financing or a specific interest rate or term is available. Prices exclude taxes, PDI, documentation and delivery fees, destination charges and fees. This offer expires when this information changes or the stock number is sold.

Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. Where an image has a stock image indicator, please confirm specific unit details with your dealer representative.