2025 Grand Design Momentum 320G – Elevate Your Toy Hauling Adventures
The 2025 Grand Design Momentum 320G is not just a toy hauler—it’s a masterpiece of engineering, luxury, and functionality, purpose-built for the adventurous spirit that refuses to compromise comfort for capability. Whether you’re conquering backcountry trails, spending a weekend at the dunes, or exploring mountain vistas, the Momentum 320G provides a seamless combination of rugged utility and residential elegance. It’s the kind of RV that turns heads at the campground and keeps your lifestyle elevated, no matter how far off the grid you roam.
Let’s take a journey through this extraordinary fifth wheel to see what makes the 2025 Momentum 320G one of the most coveted models in its class.
From the outside, the Momentum 320G exudes power and style. Grand Design’s high-gloss gel coat fiberglass exterior is paired with bold, aggressive graphics that communicate its off-road DNA. LED accent lighting around the front cap and underneath the unit adds a dramatic flair at night, while the front molded fiberglass cap includes integrated LED lights and a windshield for a sleeker profile.
Its 3-axle setup, MORryde CRE3000 suspension system, and heavy-duty 7,000-pound axles are designed to support not only the RV itself but also your ATVs, UTVs, motorcycles, or any gear you haul. Add in the G-rated tires and upgraded MORryde pin box, and you have the rugged support system necessary for long hauls or bumpy terrain.
You’ll also appreciate the dual awnings with integrated LED lighting—one over the entry door and another extending out from the garage area—offering shade and protection to your outdoor living space.
Step into the 11-foot garage, and you’ll immediately recognize the Momentum 320G’s commitment to gearheads and adventurers. The garage area is outfitted with a rubberized diamond plate floor, tie-downs rated for 2,500 lbs each, and a Zero-G rear ramp door that doubles as a patio deck with side rails and a retractable awning.
This space transforms effortlessly depending on your needs. The garage features dual opposing sofas with a removable table that converts into a bed, along with an overhead power-lift queen bunk. When you're not hauling your favorite off-road toys, this area becomes a versatile living, sleeping, or dining space—perfect for extra guests or kids.
You’ll also find washer/dryer prep in the garage area, as well as a dedicated half-bath—making cleanup easy without tracking dirt into the main living quarters. The garage is fully insulated and has its own air conditioning duct, ensuring comfort even when the weather outside is less than ideal.
When you step into the main living space, you’ll quickly forget you’re in a toy hauler. The 2025 Momentum 320G offers an upscale interior design that feels more like a luxury condo than an RV. With Grand Design’s signature attention to detail, the interior is outfitted with premium cabinetry, solid-surface countertops, and residential-grade furnishings.
The living room includes a reclining theater seating setup with heat, massage, and LED lighting, directly across from a large LED HDTV and an electric fireplace. The slide-outs are deep and tall, giving you ample space to relax, entertain, or stretch out after a day on the trails.
Large panoramic windows let in natural light and offer expansive views of the outdoors, while blackout roller shades give you privacy and help manage temperature control when needed.
The kitchen in the Momentum 320G is anything but an afterthought. With a residential feel and smart layout, it’s equipped for those who love to cook, whether preparing a quick breakfast before heading out or hosting dinner for friends.
Key features include:
Solid-surface countertops
Stainless steel appliances
A 30-inch residential microwave
18 cu. ft. double-door refrigerator (gas/electric or residential options)
Deep stainless-steel sink with a high-rise faucet
Three-burner range with glass cover and oven
The island provides additional prep space and storage, while upper and lower cabinetry ensure there's a place for all your cooking essentials. A pantry closet offers even more food storage, making long stays easy and organized.
The front master bedroom is designed for privacy and tranquility. It features a queen bed (king optional) with under-bed storage, a premium mattress, and bedside outlets with USB ports. The slide-out wardrobe and overhead cabinets offer plenty of clothing storage, while the dresser and bedroom TV prep round out the space.
You’ll appreciate the soft lighting, quiet insulation, and solid door for privacy. Whether it’s a power nap or a full night’s sleep, this bedroom ensures you’ll wake up refreshed and ready to go.
The main bathroom in the 320G is roomy and well-appointed. You’ll find a seamless fiberglass shower with skylight and glass doors, a porcelain foot-flush toilet, linen cabinet, and a mirrored medicine cabinet above a solid-surface vanity.
Whether it’s a quick rinse or a long hot shower after a dusty day of adventuring, this space offers a clean, comfortable place to freshen up.
The Momentum 320G is a true four-season coach, thanks to Grand Design’s premium construction techniques and the Weather-Tek insulation package. This includes:
Fully enclosed and heated underbelly
Heated tanks
Radiant foil insulation in the roof and floor
R-40 roof, R-45 floor, and R-11 sidewall insulation
Dual A/C units (with optional third unit) keep the entire RV cool even in the heat of summer, while a 35K BTU furnace and the electric fireplace keep you warm during shoulder seasons or unexpected cold snaps.
Today’s RVers expect modern tech, and the 320G delivers. Standard features include:
Compass Connect smart control system (Bluetooth-enabled app control for lights, awnings, slides, and tank levels)
Keyed-Alike system for all entry points
Backup camera prep
Solar prep and optional 300W or 600W solar packages with controller
Wi-Fi/4G prep
Multiple USB charging ports throughout
You can control much of the RV via your smartphone, allowing you to set up camp faster and manage utilities with ease.
Storage is never a concern with the 320G. Inside, you’ll find ample cabinetry in every room, including hidden storage nooks and under-bed compartments. The exterior features an oversized pass-through storage bay with motion-sensor lighting and slam-latch baggage doors.
The garage doubles as even more storage, and there’s room for tools, gear, outdoor furniture, and spare parts.
Grand Design packs the 320G with thoughtful touches, including:
60-gallon fuel station with dual tanks (30-gallon for generator, 30-gallon for toys)
6-point auto-leveling system (Hydraulic Level-Up)
12V tank heaters
Onan 5.5kW gasoline generator (optional or included depending on package)
Central vacuum system
Exterior hot/cold shower
Spare tire with carrier
Everything is designed to minimize hassle and maximize your time outdoors.
Grand Design offers the Momentum 320G with several packages that enhance comfort and convenience:
Luxury Interior Package – Includes upgraded materials, hardwood cabinetry, theater seating, and more.
Garage Package – Adds additional A/C unit in the garage, weather-resistant flooring, and multi-functional furniture.
Exterior Package – Includes frameless windows, painted front cap, and upgraded insulation features.
Solar Package – Choose from 300W or 600W solar kits with a 2000W inverter, lithium battery compatibility, and full roof wiring.
Off-Grid Package – Ideal for dry camping or boondocking, includes generator, solar, and enhanced power management.
Length: 39’10”
Width: 8’5”
Height: 13’5”
Dry Weight: ~13,200 lbs
GVWR: 16,800 lbs
Hitch Weight: ~2,800 lbs
Fresh Water Capacity: 150 gallons
Grey Water Capacity: 78 gallons
Black Water Capacity: 78 gallons
Fuel Station Capacity: 60 gallons (30 + 30 split)
Garage Length: 11’
For RVers who crave the thrill of adventure but don’t want to leave luxury behind, the Momentum 320G strikes the perfect balance. It’s built tough enough to transport all your toys, yet refined enough to be a full-time home on wheels. Whether you're parked in the backcountry or a luxury RV resort, the Momentum stands out.
With Grand Design’s industry-leading warranty, customer support, and reputation for quality craftsmanship, you can hit the road with confidence, knowing your Momentum is built to perform and made to last.
The Final Word
The 2025 Grand Design Momentum 320G is more than a toy hauler—it's a statement. It says you refuse to compromise on what you bring, where you go, or how you live. With its bold design, premium materials, and versatile layout, this fifth wheel empowers you to explore farther, stay longer, and live bolder.
If your adventures demand more—more space, more comfort, more capability—the 320G delivers it all. Step into the Momentum lifestyle and discover just how good life on the road can be.
| Stock # | N25-8952 |
| Location | Sonnys RVS |
| Year | 2025 |
| Make | Grand Design |
| Model | Momentum G-Class |
| Trim | 320G |
| Condition | NEW |
| Status | In Stock |
2025 Grand Design Momentum 320G – Elevate Your Toy Hauling Adventures
The 2025 Grand Design Momentum 320G is not just a toy hauler—it’s a masterpiece of engineering, luxury, and functionality, purpose-built for the adventurous spirit that refuses to compromise comfort for capability. Whether you’re conquering backcountry trails, spending a weekend at the dunes, or exploring mountain vistas, the Momentum 320G provides a seamless combination of rugged utility and residential elegance. It’s the kind of RV that turns heads at the campground and keeps your lifestyle elevated, no matter how far off the grid you roam.
Let’s take a journey through this extraordinary fifth wheel to see what makes the 2025 Momentum 320G one of the most coveted models in its class.
From the outside, the Momentum 320G exudes power and style. Grand Design’s high-gloss gel coat fiberglass exterior is paired with bold, aggressive graphics that communicate its off-road DNA. LED accent lighting around the front cap and underneath the unit adds a dramatic flair at night, while the front molded fiberglass cap includes integrated LED lights and a windshield for a sleeker profile.
Its 3-axle setup, MORryde CRE3000 suspension system, and heavy-duty 7,000-pound axles are designed to support not only the RV itself but also your ATVs, UTVs, motorcycles, or any gear you haul. Add in the G-rated tires and upgraded MORryde pin box, and you have the rugged support system necessary for long hauls or bumpy terrain.
You’ll also appreciate the dual awnings with integrated LED lighting—one over the entry door and another extending out from the garage area—offering shade and protection to your outdoor living space.
Step into the 11-foot garage, and you’ll immediately recognize the Momentum 320G’s commitment to gearheads and adventurers. The garage area is outfitted with a rubberized diamond plate floor, tie-downs rated for 2,500 lbs each, and a Zero-G rear ramp door that doubles as a patio deck with side rails and a retractable awning.
This space transforms effortlessly depending on your needs. The garage features dual opposing sofas with a removable table that converts into a bed, along with an overhead power-lift queen bunk. When you're not hauling your favorite off-road toys, this area becomes a versatile living, sleeping, or dining space—perfect for extra guests or kids.
You’ll also find washer/dryer prep in the garage area, as well as a dedicated half-bath—making cleanup easy without tracking dirt into the main living quarters. The garage is fully insulated and has its own air conditioning duct, ensuring comfort even when the weather outside is less than ideal.
When you step into the main living space, you’ll quickly forget you’re in a toy hauler. The 2025 Momentum 320G offers an upscale interior design that feels more like a luxury condo than an RV. With Grand Design’s signature attention to detail, the interior is outfitted with premium cabinetry, solid-surface countertops, and residential-grade furnishings.
The living room includes a reclining theater seating setup with heat, massage, and LED lighting, directly across from a large LED HDTV and an electric fireplace. The slide-outs are deep and tall, giving you ample space to relax, entertain, or stretch out after a day on the trails.
Large panoramic windows let in natural light and offer expansive views of the outdoors, while blackout roller shades give you privacy and help manage temperature control when needed.
The kitchen in the Momentum 320G is anything but an afterthought. With a residential feel and smart layout, it’s equipped for those who love to cook, whether preparing a quick breakfast before heading out or hosting dinner for friends.
Key features include:
Solid-surface countertops
Stainless steel appliances
A 30-inch residential microwave
18 cu. ft. double-door refrigerator (gas/electric or residential options)
Deep stainless-steel sink with a high-rise faucet
Three-burner range with glass cover and oven
The island provides additional prep space and storage, while upper and lower cabinetry ensure there's a place for all your cooking essentials. A pantry closet offers even more food storage, making long stays easy and organized.
The front master bedroom is designed for privacy and tranquility. It features a queen bed (king optional) with under-bed storage, a premium mattress, and bedside outlets with USB ports. The slide-out wardrobe and overhead cabinets offer plenty of clothing storage, while the dresser and bedroom TV prep round out the space.
You’ll appreciate the soft lighting, quiet insulation, and solid door for privacy. Whether it’s a power nap or a full night’s sleep, this bedroom ensures you’ll wake up refreshed and ready to go.
The main bathroom in the 320G is roomy and well-appointed. You’ll find a seamless fiberglass shower with skylight and glass doors, a porcelain foot-flush toilet, linen cabinet, and a mirrored medicine cabinet above a solid-surface vanity.
Whether it’s a quick rinse or a long hot shower after a dusty day of adventuring, this space offers a clean, comfortable place to freshen up.
The Momentum 320G is a true four-season coach, thanks to Grand Design’s premium construction techniques and the Weather-Tek insulation package. This includes:
Fully enclosed and heated underbelly
Heated tanks
Radiant foil insulation in the roof and floor
R-40 roof, R-45 floor, and R-11 sidewall insulation
Dual A/C units (with optional third unit) keep the entire RV cool even in the heat of summer, while a 35K BTU furnace and the electric fireplace keep you warm during shoulder seasons or unexpected cold snaps.
Today’s RVers expect modern tech, and the 320G delivers. Standard features include:
Compass Connect smart control system (Bluetooth-enabled app control for lights, awnings, slides, and tank levels)
Keyed-Alike system for all entry points
Backup camera prep
Solar prep and optional 300W or 600W solar packages with controller
Wi-Fi/4G prep
Multiple USB charging ports throughout
You can control much of the RV via your smartphone, allowing you to set up camp faster and manage utilities with ease.
Storage is never a concern with the 320G. Inside, you’ll find ample cabinetry in every room, including hidden storage nooks and under-bed compartments. The exterior features an oversized pass-through storage bay with motion-sensor lighting and slam-latch baggage doors.
The garage doubles as even more storage, and there’s room for tools, gear, outdoor furniture, and spare parts.
Grand Design packs the 320G with thoughtful touches, including:
60-gallon fuel station with dual tanks (30-gallon for generator, 30-gallon for toys)
6-point auto-leveling system (Hydraulic Level-Up)
12V tank heaters
Onan 5.5kW gasoline generator (optional or included depending on package)
Central vacuum system
Exterior hot/cold shower
Spare tire with carrier
Everything is designed to minimize hassle and maximize your time outdoors.
Grand Design offers the Momentum 320G with several packages that enhance comfort and convenience:
Luxury Interior Package – Includes upgraded materials, hardwood cabinetry, theater seating, and more.
Garage Package – Adds additional A/C unit in the garage, weather-resistant flooring, and multi-functional furniture.
Exterior Package – Includes frameless windows, painted front cap, and upgraded insulation features.
Solar Package – Choose from 300W or 600W solar kits with a 2000W inverter, lithium battery compatibility, and full roof wiring.
Off-Grid Package – Ideal for dry camping or boondocking, includes generator, solar, and enhanced power management.
Length: 39’10”
Width: 8’5”
Height: 13’5”
Dry Weight: ~13,200 lbs
GVWR: 16,800 lbs
Hitch Weight: ~2,800 lbs
Fresh Water Capacity: 150 gallons
Grey Water Capacity: 78 gallons
Black Water Capacity: 78 gallons
Fuel Station Capacity: 60 gallons (30 + 30 split)
Garage Length: 11’
For RVers who crave the thrill of adventure but don’t want to leave luxury behind, the Momentum 320G strikes the perfect balance. It’s built tough enough to transport all your toys, yet refined enough to be a full-time home on wheels. Whether you're parked in the backcountry or a luxury RV resort, the Momentum stands out.
With Grand Design’s industry-leading warranty, customer support, and reputation for quality craftsmanship, you can hit the road with confidence, knowing your Momentum is built to perform and made to last.
The Final Word
The 2025 Grand Design Momentum 320G is more than a toy hauler—it's a statement. It says you refuse to compromise on what you bring, where you go, or how you live. With its bold design, premium materials, and versatile layout, this fifth wheel empowers you to explore farther, stay longer, and live bolder.
If your adventures demand more—more space, more comfort, more capability—the 320G delivers it all. Step into the Momentum lifestyle and discover just how good life on the road can be.
| General | |
|---|---|
| Class | Fifth Wheel |
| Secondary Category | Toy Hauler 11 Ft. Garage |
| Other Specifications | |
|---|---|
| Wheels Composition | Aluminum |
| Number Of Axles | 2 |
| Front Brake Type | Not Applicable |
| Rear Brake Type | Electric Drum |
| Width (IN/MM) | 8.42 ft. (101 in.) |
| Length (FT/IN) | 36' 3" |
| Gross Weight Rating (LB/KG) | 16,800 lbs. LBS |
| Number Of Propane Tanks | 2 |
| Total Propane Tank Capacity (GAL/LBS) | 60 lbs. |
| Body Material | Fiberglass |
| Number Of Doors | 2 |
| Number Of Slideouts | 3 |
| Awning Length (FT/M) | 18 ft. (216 in.) |
| Power Retractable Awning | Yes |
| Kitchen Location | Center |
| Living Area Location | Center |
| Number Of Oven Burners | 4 |
| Overhead Fan | Yes |
| Layout | Oven / Stove |
| Refrigerator Power Mode | Electric |
| Number Of Sofas | 1 |
| Sofa Material | Vinyl |
| Reclining Sofa | Yes |
| Max Sleeping Count | 7 |
| Number Of Bunk Beds | 1 |
| Number Of Double Beds | 0 |
| Number Of Full Size Beds | 0 |
| Number Of Queen Size Beds | 1 |
| Number Of King Size Beds | 1 |
| Number Of Convertible Sofa Beds | 1 |
| Bunkhouse | No |
| Number Of Bathrooms | 2 |
| Bathroom Flooring Type | Vinyl |
| Bathroom Location | Center |
| Toilet Type | Plastic |
| Bathroom Sink | Center |
| Bathroom Medicine Cabinet | Center |
| Bathroom Mirror | Center |
| Bathroom Vent Fan System | Center |
| Battery Power Converter | Yes |
| Air Conditioning Prewiring | Yes |
| Cable Prewiring | Yes |
| Phone Prewiring | No |
| Heat Prewiring | Yes |
| TV Antenna Prewiring | Yes |
| Satellite Prewiring | Yes |
| Washer/Dryer Prewiring | Yes |
| Air Conditioning Type | Automatic |
| Heater Type | Automatic |
| Water Heater Pump Power Mode | Electrical / Propane |
| Number Of Radios | 1 |
| Surround Sound | Yes |
| Rear Video Backup Camera | Yes |
| Wallpaper | Yes |
| Interior Wood Finish | Yes |
| Basic Warranty (MO) | 12 |
| Structure Warranty (MO/MI) | 36 |
| Spec | 0 |
| Type | Toy Hauler |
| Solar Battery Charger | Yes |
| Water Heater Tank | Yes |
| Shower | Center |
| Toilet | Center |
| Heater | 35,000 BTUs |
| Air Conditioning | 30,000 BTUs |
| Speakers | Interior / Exterior |
| Height Closed (IN) | 13.42 ft. (161 in.) |
| Dry Weight (LBS) | 12400 LBS |
| Hot Deals |
|---|
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