New and used Grand Design RVs for sale

Used 2019 Grand Design Momentum 399TH

$61,950.00
GADSDEN
Attalla, AL

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Grand Design Momentum 399TH toy hauler highlights: Dual Entry Kitchen Island Exterior LED TV Dual Enclosed Fuel Station Spray Port If you are ready to play with your off-road toys, hitch up this Momentum 399TH fifth wheel toy hauler after loading your toys in the 13' garage. You will be able to get cleaned up after getting muddy from the trails in the half bath in the garage or the full bathroom next to the bedroom. The kids can sit on the bar stools at the kitchen island, or relax on the dinette and theater seats while watching the 49" LED TV and fireplace. There are several options to choose from, and many more features to enjoy such as the dual entry doors, fold-down side patio with LED TV, and exteriorunobstructed pass-through storage, plus more! With any Momentum toy hauler fifth wheel you will enjoy extraordinary living with extreme playtime with the Weather-Tek insulation for four seasons of protection, and a fully enclosed fuel pump station to keep the fun going the whole time. The Tuff-Ply garage flooring is gas and oil resistant, plus triple insulated. You will find 2,500 lb. rated flush-mount tie-downs to keep your toys secure while moving down the road. The interior includes a sofa with headrest and removable swivel table, a convection microwave, a central vacuum system with tools and a dust pan, and a satellite/solar roof access channel to mention a few highlights. Any Grand Design Momentum allows you to keep your active lifestyle no matter where you decide to stay!

Used 2021 Grand Design Momentum 399TH

$89,995.00
BRETZ RV & MARINE BOISE, ID
Boise, ID

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Grand Design Momentum toy hauler 399TH highlights: ~OPTIONS LISTED BY MANUFACTURER,ACTUAL OPTIONS MAY VARY~ Dual Entry Full and Half Bath Exterior LED TV 13' Separate Garage Loft Fold-Down Side Patio Whatever your idea of adventure is, this Momentum toy hauler will make it even better! The fold-down side patio is the perfect party space, especially since there is also an exterior LED TV, and back on the interior, you'll find three more LED TVs for entertainment while staying indoors. The front master suite is going to provide you with the most comfort while you sleep, and the electric fireplace within the main living area is going to provide you with an extra bit of heat on chilly nights. The kitchen has an island with bar stools so that you can sit down and chat with the chef, and you can also choose to sit back in the theater seating with heat/massage to relax after a long day of biking or hiking. If you would prefer to have a residential refrigerator, you should check out model 399TH-R! The very best adventures are waiting for you with the Grand Design Momentum toy hauler! The Momentum combines extreme play with extraordinary living so that you can have the best of both worlds. You won't have to miss out on any of your favorite features from home because the Momentum has just about everything. With the Weather-Tek insulation, you won't have to let anything hold you back from getting out and taking an adventure during any season, and the Tuff Ply gas-and-oil-resistant garage flooring is a quality base for your toys. The flush-mount tie-downs rated for 2,500 LBS will keep your gear in place as you travel, and there is a protective diamond plate on the garage sidewalls for additional protection. Some of the options that you can choose to add to your Momentum are the Solitude solar system and Rockford Fosgate speaker package.

New 2024 Grand Design Momentum 399TH

$89,997.00
ST GEORGE,UT

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Grand Design Momentum fifth wheel toy hauler 399TH highlights: Fold-Down Side Patio 13' Garage Bath and a Half Dual Entry Smart Sink Fireplace Get ready for a lot of fun when you head out to the off-road park, a special event, or a long trip with your toys! You will love the garage with the Fast Ramp rear ramp door, the Ram-Air garage vents on both sides, the 2,500 lb. rated flush-mount tie-downs and the protective diamond plate on the garage sidewalls. This area can become a bedroom or an extra living area if you want to add Happi-Jac rollover sofas/table with a top bed option, plus you will already have a half bath for convenience, an overhead loft bed plus a flip-up pet dish for your furry friends. The living and kitchen area is spacious with dual slides and a kitchen island with bar stools, a free standing dinette and theatre seating. The fold-down side patio offers a great place to relax outdoors above ground, and there are many more features to enjoy plus several options to customize your fifth wheel. 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!

Used 2022 Grand Design Momentum 399TH

$99,995.00
CAMPERS INN RV MERRIMACK, NH
Merrimack, NH

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Used 2022 Grand Design Momentum 399TH – Luxury Toy Hauler Meets Family Adventure Turn every getaway into an unforgettable experience with the Used 2022 Grand Design Momentum 399TH, a top-tier toy hauler that combines residential comfort, generous living space, and serious utility for adventurers who refuse to compromise. Whether you’re hauling ATVs, motorcycles, or outdoor toys, this Momentum model delivers strength, style, and comfort in one striking package. Spacious, Functional Interior Designed for Real LivingStep inside and be impressed by the expansive floorplan that feels more like a luxury home than a traditional toy hauler. The sizeable living area features stylish seating, a slide-out that expands space for comfort, and wide panoramic windows that draw in natural light and scenic views. Plush furniture creates an inviting environment for relaxing, socializing, and making every moment on the road feel special. The fully equipped kitchen rivals many residential spaces. With a residential-size refrigerator, three-burner stove, oven, microwave, and substantial counter space, meal prep becomes a joy rather than a chore. Thoughtful storage solutions keep cookware, utensils, and pantry items neatly organized, and the dining area offers plenty of room for meals, game nights, or planning tomorrow’s adventure. Toy Hauler Flexibility Without CompromiseOne of the standout features of the Momentum 399TH is its spacious garage area—designed to handle your toys and gear with ease. Whether you’re loading up off-road vehicles, bikes, or camping gear, this trailer’s oversized garage delivers durability and convenience. The adjustable tie-downs and ramp door make loading and unloading a breeze, while integrated storage keeps gear secure during travel. The front master suite offers a private, restful retreat with a comfortable bed, generous storage, and a layout crafted for rest and relaxation. The full bathroom includes a shower with skylight, vanity, and toilet, giving you all the comforts of home no matter how rugged your journey. Interior and exterior storage compartments throughout the coach keep your belongings organized and accessible. Entertainment and Comfort on Every TripWith climate control systems to support year-round comfort and entertainment options throughout the interior, the Momentum 399TH isn’t just rugged—it’s rich in amenities. Whether you’re hosting movie night after a day in the outdoors or curling up with a book while the world goes by, this toy hauler offers living space that works for families, couples, and adventurers alike. Why Buy This Used RV?Choosing the Used 2022 Grand Design Momentum 399TH means you’re getting best-in-class features, quality construction, and residential comfort at a fraction of the price of a new unit. With its flexible garage design, generous living space, and upscale amenities, this toy hauler is perfect for families, thrill seekers, and anyone who wants to combine utility with comfort. Its strong build and thoughtful layout make it ideal for long trips, seasonal travel, and weekend adventures alike—offering you versatility and value in every mile. Why Buy from Campers Inn RV?At Campers Inn RV, we make RV ownership easy, supportive, and enjoyable. Every used RV in our inventory undergoes a comprehensive inspection to ensure it’s road-ready and dependable, so you can travel with confidence. Our experienced RV specialists provide personalized guidance to help you find the right model for your lifestyle and travel goals. We also offer flexible financing options tailored to your budget and ongoing support long after your purchase. With decades of industry experience and a nationwide network of locations and service partners, Campers Inn RV stands behind your adventure from day one and beyond. The Used 2022 Grand Design Momentum 399TH delivers luxury, flexibility, and rugged capability in one exceptional toy hauler. Visit your local Campers Inn RV today to explore this model in person and start planning your next great adventure with confidence.

Used 2022 Grand Design Momentum 399TH

$69,998.00
TAMPA, FL

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Grand Design Momentum fifth wheel toy hauler 399TH highlights: Fold-Down Side Patio 13' Garage Bath and a Half Dual Entry Island with Bar Stools 60 Gallon Fuel Tank Get ready for a lot of fun when you head out to the off-road park, a special event, or a long trip with your toys! You will love the garage with the Fast Ramp rear ramp door, the Ram-Air garage vents on both sides, the 2,500 lb. rated flush-mount tie-downs and the protective diamond plate on the garage sidewalls. This area can become a bedroom or an extra living area if you want to add Happi-Jac rollover sofas/table with top bed option, plus you will already have a half bath for convenience, an LED TV and storage for your gear. The living and kitchen area is spacious with dual slides and a kitchen island with bar stools, a free standing table and theatre seating or choose the super sofa option, and everything you need to feed everyone. And the fold-down side patio offers an LED TV, storage and a great place to relax outdoors above ground. There are many more features to enjoy, and several options to customize your fifth wheel. And if you would prefer to have a residential refrigerator, you should check out model 399TH-R! 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, the triple insulated garage floor in most toy haulers, the insulated gooseneck and the Rail-Tite underbelly seat. 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, a sofa with headrest and removable swivel tables which include heat, massage and LED lighting package, and a central vacuum system with tools and dust pan. Start your extreme playtime now with a Momentum!

Used 2023 Grand Design Momentum 399TH

$89,984.00
WALLER, TX

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Grand Design Momentum fifth wheel toy hauler 399TH highlights: Fold-Down Side Patio 13' Garage Bath and a Half Dual Entry Island with Bar Stools 60 Gallon Fuel Tank Get ready for a lot of fun when you head out to the off-road park, a special event, or a long trip with your toys! You will love the garage with the Fast Ramp rear ramp door, the Ram-Air garage vents on both sides, the 2,500 lb. rated flush-mount tie-downs and the protective diamond plate on the garage sidewalls. This area can become a bedroom or an extra living area if you want to add Happi-Jac rollover sofas/table with a top bed option, plus you will already have a half bath for convenience, an LED TV and storage for your gear. The living and kitchen area is spacious with dual slides and a kitchen island with bar stools, a free standing table and theatre seating or choose the super sofa option, and everything you need to feed everyone. The fold-down side patio offers an LED TV, storage and a great place to relax outdoors above ground. There are many more features to enjoy, and several options to customize your fifth wheel. 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!

Used 2024 Grand Design Momentum 410TH

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BRETZ RV & MARINE BILLINGS, MT
Billings, MT

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Grand Design Momentum fifth wheel toy hauler 410TH highlights: Front Private Bedroom Kitchen Island Private Toilet Dual Entry Doors Smart Sink Flip-Up Pet Dish in Garage There is much to love about this fifth wheel toy hauler! Starting with the 13' 6" garage that comes with an overhead bed, one of the dual entry doors, and an optional half bath to add. You might also choose to add the optional Happi-Jac rollover sofas and table with a top bed if need more sleeping space. The chef will love cooking in the kitchen with an island and a Smart Sink that includes a removable cutting board, produce strainer and glass rinser. The rest of the group can socialize together at either the free standing dinette or at the chaise lounge with pull-out sofa across from the entertainment center with an LED TV and fireplace. This model also includes a full bath with a private toilet and two sliding doors so you can close off this room completely if you wish. It enters directly into the front private bedroom where there is a queen bed slide to lay your head on at night, a front wardrobe prepped to add an optional washer and dryer, and a slide top dresser with TV above it! 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!

New 2026 Grand Design Momentum 414M

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CAMPERS INN RV MERRIMACK, NH
Merrimack, NH

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Grand Design Momentum 414M toy hauler fifth wheel highlights: Queen Bed Slide Out U-Shaped Kitchen Counter Free-Standing Dinette Kitchen Pantry 14' Separate Garage Flip-Up Pet Dish Any time spent in this spacious toy hauler will be time well spent! The 14' garage includes a Liftsuite system, an overhead loft bed and a flip-up pet dish for your furry friends. Once you enter in the main living area, you can relax on the L-shaped sofa with recline across from the fireplace, and there is a free-standing dinette if you want to play a game or two. The chef of your group will love the generous counter space in the kitchen, and the dual entry bath will let everyone stay clean throughout your trip! Head to the front master bedroom to enjoy the queen bed slide out with an optional king bed, a slide top dresser with TV prep, plus a large front closet, complete with washer and dryer prep! 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 fully enclosed and heated underbelly and storage area, the 5-sided aluminum cage, 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, 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! STOCK IMAGES MAY BE SHOWN. COLORS & SPECS MAY VARY.

New 2026 Grand Design Momentum 414M

$124,995.00
TAMPA, FL

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Grand Design Momentum 414M toy hauler fifth wheel highlights: Queen Bed Slide Out U-Shaped Kitchen Counter Free-Standing Dinette Kitchen Pantry 14' Separate Garage Flip-Up Pet Dish Any time spent in this spacious toy hauler will be time well spent! The 14' garage includes a Liftsuite system, an overhead loft bed and a flip-up pet dish for your furry friends. Once you enter in the main living area, you can relax on the L-shaped sofa with recline across from the fireplace, and there is a free-standing dinette if you want to play a game or two. The chef of your group will love the generous counter space in the kitchen, and the dual entry bath will let everyone stay clean throughout your trip! Head to the front master bedroom to enjoy the queen bed slide out with an optional king bed, a slide top dresser with TV prep, plus a large front closet, complete with washer and dryer prep! 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 fully enclosed and heated underbelly and storage area, the 5-sided aluminum cage, 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, 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!

New 2026 Grand Design Momentum 414M

$124,995.00
TAMPA, FL

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Grand Design Momentum 414M toy hauler fifth wheel highlights: Queen Bed Slide Out U-Shaped Kitchen Counter Free-Standing Dinette Kitchen Pantry 14' Separate Garage Flip-Up Pet Dish Any time spent in this spacious toy hauler will be time well spent! The 14' garage includes a Liftsuite system, an overhead loft bed and a flip-up pet dish for your furry friends. Once you enter in the main living area, you can relax on the L-shaped sofa with recline across from the fireplace, and there is a free-standing dinette if you want to play a game or two. The chef of your group will love the generous counter space in the kitchen, and the dual entry bath will let everyone stay clean throughout your trip! Head to the front master bedroom to enjoy the queen bed slide out with an optional king bed, a slide top dresser with TV prep, plus a large front closet, complete with washer and dryer prep! 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 fully enclosed and heated underbelly and storage area, the 5-sided aluminum cage, 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, 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!

New and used Grand Design RVs for sale

Used 2019 Grand Design Momentum 399TH

$61,950.00

Used 2021 Grand Design Momentum 399TH

$89,995.00

New 2024 Grand Design Momentum 399TH

$89,997.00

Used 2022 Grand Design Momentum 399TH

$99,995.00

Used 2022 Grand Design Momentum 399TH

$69,998.00

Used 2023 Grand Design Momentum 399TH

$89,984.00

Used 2024 Grand Design Momentum 410TH

Call for price

New 2026 Grand Design Momentum 414M

Call for price

New 2026 Grand Design Momentum 414M

$124,995.00

New 2026 Grand Design Momentum 414M

$124,995.00

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