New and used 398M Momentum M-Class by Grand Design RVs for sale

Priority RV Network Benefits

Grand Design Momentum M-Class toy hauler 398M highlights:

• 18' Separate Garage
• Bedroom Wardrobe Slide
• Four-Seat Sofa
• Kitchen Island w/Bar Stools
• Dual Entry Doors
• Flip Up Pet Dish

Load up your toys, gear, clothes and food to enjoy some off-road fun with your toys and friends! Once at the RV park, unload your toys and set up the three slide outs, the two awnings, and begin planning your trail rides! You might decide to make a meal or snack in the combined kitchen and main living area which offers all the appliances you need, plus a kitchen island with two bar stools, a pantry, an LED TV with a fireplace below, plus a slide out four-seat sofa. The garage even offers the option to add two Happi-Jac rollover sofas with tables with a top bed if you want seating and sleeping space. The overhead loft bed provides sleeping space as well. You will love the sunken tub/shower with a seat in the full bathroom with a space savings sliding door, and the front bedroom can be your escape. There is a queen bed, a slide out wardrobe and USB charging outlets.

With any Momentum M-Class toy hauler by Grand Design, you will enjoy luxury at every turn! They have been constructed to a superior standard with a thermal roof design, triple insulated main floor and garage floor, and a Rail-Tite underbelly seal that will allow you to camp in all elements. Each model also features an 8' 5" wide body chassis with a wide rail design, no wheel wheels, and a dovetail entry for easier loading. The Stealth A/C system provides maximum cooling power, and the CRE3000 suspension system means you can enjoy a smooth tow each time. You will love the luxurious interior with a professional grade stainless steel cooktop, interior color changing LED accent lighting, a fiberglass shower with a glass door, and solid surface countertops. 

Priority RV Network Benefits

Grand Design Momentum M-Class toy hauler 398M highlights:

• 18' Separate Garage
• Bedroom Wardrobe Slide
• Four-Seat Super Sofa
• Kitchen Island with Bar Stools
• Dual Entry Doors
• Flip Up Pet Dish

Load up your toys, gear, clothes and food to enjoy some off-road fun with your toys and friends! Once at the RV park, unload your toys and set up the three slide outs and two awnings, and begin planning your trail rides! You might decide to make a meal or snack in the combined kitchen and main living area which offers all the appliances you need, plus a kitchen island with two bar stools, a pantry, an LED TV with a fireplace below, plus a slide out four-seat sofa. The garage even offers sofas and an overhead bed plus the option to add two additional Happi-Jac rollover sofas with tables with a top bed if you want seating and sleeping space. The overhead loft bed provides sleeping space as well. You will love the shower with a seat in the full bathroom with a space saving sliding door, and the front bedroom can be your escape. There is a queen bed, a slide out wardrobe and USB charging outlets.

With any Momentum M-Class toy hauler by Grand Design, you will enjoy luxury at every turn! They have been constructed to a superior standard with a thermal roof design, triple insulated main floor and garage floor, and a Rail-Tite underbelly seal that will allow you to camp in all elements. Each model also features an 8' 5" wide body chassis with a wide rail design, no wheel wheels, and a dovetail entry for easier loading. The Stealth A/C system provides maximum cooling power, and the CRE3000 suspension system means you can enjoy a smooth tow each time. You will love the luxurious interior with a professional grade stainless steel cooktop, interior color changing LED accent lighting, a fiberglass shower with a glass door, and solid surface countertops. 

Grand Design Momentum M-Class toy hauler 398M highlights:

• 18' Separate Garage
• Bedroom Wardrobe Slide
• Four-Seat Sofa
• Stowable Table
• Kitchen Island w/Bar Stools
• Dual Entry Doors
• Universal Docking Station

Load up your toys, gear, clothes and food to enjoy some off-road fun with your toys and friends! Once at the RV park, unload your toys, and setup the three slide outs, the two awnings, and begin planning your trail rides! You might decide to make a meal or snack in the combined kitchen and main living area which offers all the appliances you need, plus a kitchen island with extended countertop and two bar stools, a pantry, a 49" LED TV with a fireplace below, plus a slide out four-seat sofa. The garage even offers the option to add two Happi-Jac rollover sofas and a table with a top bed if you want seating and sleeping space, plus there is storage, a prepped space to add a washer/dryer option, and an optional half bath. The overhead loft bed provides sleeping space as well. You will love the sunken tub/shower with a seat in the full bathroom with a space savings sliding door, and the front bedroom can be your escape. There is a queen bed, a slide out wardrobe and USB charging outlets. If you want less garage space, take a look at 349M!

The Momentum M-Class fifth wheel toy haulers by Grand Design are lighter than the Momentum yet aren't lightweight on features when it comes to elegant design, luxury and a "Class" of its own!  The chef-inspired kitchen provides a free-standing 3.7 cu. ft. gas range, a four burner cooktop with cast iron grill, an electronic ignition oven, and a digital display and interior oven light, plus 42,500 BTU of cooking power. The upgraded main bathroom offers solid surface counter tops, a three-jet shower panel system, a shower wand, and a teak bench seat. Each toy hauler includes a triple insulated garage floor, Tuff-Ply gas and oil resistant garage flooring, 2,500 lb. rated flush-mount tie-downs, and a Fast Ramp rear ramp door with two-sided lift-assist technology making it easy for one person to operate.  And the MORryde CRE3000 suspension system and the rubber pin box, plus the upgraded axle hangers provide performance and smooth towing to your favorite destinations!

Grand Design Momentum M-Class toy hauler 398M highlights:

• 18' Separate Garage
• Bedroom Wardrobe Slide
• Four-Seat Sofa
• Stowable Table
• Kitchen Island w/Bar Stools
• Dual Entry Doors
• Universal Docking Station

Load up your toys, gear, clothes and food to enjoy some off-road fun with your toys and friends! Once at the RV park, unload your toys, and setup the three slide outs, the two awnings, and begin planning your trail rides! You might decide to make a meal or snack in the combined kitchen and main living area which offers all the appliances you need, plus a kitchen island with extended countertop and two bar stools, a pantry, a 49" LED TV with a fireplace below, plus a slide out four-seat sofa. The garage even offers the option to add two Happi-Jac rollover sofas and a table with a top bed if you want seating and sleeping space, plus there is storage, a prepped space to add a washer/dryer option, and an optional half bath. The overhead loft bed provides sleeping space as well. You will love the sunken tub/shower with a seat in the full bathroom with a space savings sliding door, and the front bedroom can be your escape. There is a queen bed, a slide out wardrobe and USB charging outlets. If you want less garage space, take a look at 349M!

The Momentum M-Class fifth wheel toy haulers by Grand Design are lighter than the Momentum yet aren't lightweight on features when it comes to elegant design, luxury and a "Class" of its own!  The chef-inspired kitchen provides a free-standing 3.7 cu. ft. gas range, a four burner cooktop with cast iron grill, an electronic ignition oven, and a digital display and interior oven light, plus 42,500 BTU of cooking power. The upgraded main bathroom offers solid surface counter tops, a three-jet shower panel system, a shower wand, and a teak bench seat. Each toy hauler includes a triple insulated garage floor, Tuff-Ply gas and oil resistant garage flooring, 2,500 lb. rated flush-mount tie-downs, and a Fast Ramp rear ramp door with two-sided lift-assist technology making it easy for one person to operate.  And the MORryde CRE3000 suspension system and the rubber pin box, plus the upgraded axle hangers provide performance and smooth towing to your favorite destinations!

Grand Design Momentum M-Class toy hauler 398M highlights:

• 18' Separate Garage
• Bedroom Wardrobe Slide
• Four-Seat Sofa
• Kitchen Island with Bar Stools
• Dual Entry Doors
• Flip Up Pet Dish

Load up your toys, gear, clothes and food to enjoy some off-road fun with your toys and friends! Once at the RV park, unload your toys and set up the three slide outs, the two awnings, and begin planning your trail rides! You might decide to make a meal or snack in the combined kitchen and main living area which offers all the appliances you need, plus a kitchen island with two bar stools, a pantry, an LED TV with a fireplace below, plus a slide out four-seat sofa. The garage even offers the two Happi-Jac rollover sofas with tables with a top bed if you want seating and sleeping space. The overhead loft bed provides sleeping space as well. You will love the sunken tub/shower with a seat in the full bathroom with a space saving sliding door, and the front bedroom can be your escape. There is a queen bed, a slide out wardrobe and USB charging outlets.

With any Momentum M-Class toy hauler by Grand Design, you will enjoy luxury at every turn! They have been constructed to a superior standard with a thermal roof design, triple insulated main floor and garage floor, and a Rail-Tite underbelly seal that will allow you to camp in all elements. Each model also features an 8' 5" wide body chassis with a wide rail design, no wheel wheels, and a dovetail entry for easier loading. The Stealth A/C system provides maximum cooling power, and the CRE3000 suspension system means you can enjoy a smooth tow each time. You will love the luxurious interior with a professional grade stainless steel cooktop, interior color changing LED accent lighting, a fiberglass shower with a glass door, and solid surface countertops. 

Grand Design Momentum M-Class toy hauler 398M highlights:

• 18' Separate Garage
• Bedroom Wardrobe Slide
• Four-Seat Sofa
• Kitchen Island w/Bar Stools
• Dual Entry Doors
• Flip Up Pet Dish

Load up your toys, gear, clothes and food to enjoy some off-road fun with your toys and friends! Once at the RV park, unload your toys and set up the three slide outs, the two awnings, and begin planning your trail rides! You might decide to make a meal or snack in the combined kitchen and main living area which offers all the appliances you need, plus a kitchen island with two bar stools, a pantry, an LED TV with a fireplace below, plus a slide out four-seat sofa. The garage even offers the option to add two Happi-Jac rollover sofas with tables with a top bed if you want seating and sleeping space. The overhead loft bed provides sleeping space as well. You will love the sunken tub/shower with a seat in the full bathroom with a space savings sliding door, and the front bedroom can be your escape. There is a queen bed, a slide out wardrobe and USB charging outlets.

With any Momentum M-Class toy hauler by Grand Design, you will enjoy luxury at every turn! They have been constructed to a superior standard with a thermal roof design, triple insulated main floor and garage floor, and a Rail-Tite underbelly seal that will allow you to camp in all elements. Each model also features an 8' 5" wide body chassis with a wide rail design, no wheel wheels, and a dovetail entry for easier loading. The Stealth A/C system provides maximum cooling power, and the CRE3000 suspension system means you can enjoy a smooth tow each time. You will love the luxurious interior with a professional grade stainless steel cooktop, interior color changing LED accent lighting, a fiberglass shower with a glass door, and solid surface countertops. 

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Stock 360 Tour & Stock Images may be shown. Colors & Specs may vary.

Grand Design Momentum M-Class toy hauler 398M highlights:

• 18' Separate Garage
• Bedroom Wardrobe Slide
• Four-Seat Sofa
• Kitchen Island with Bar Stools
• Dual Entry Doors
• Flip Up Pet Dish

Load up your toys, gear, clothes and food to enjoy some off-road fun with your toys and friends! Once at the RV park, unload your toys and set up the three slide outs, the two awnings, and begin planning your trail rides! You might decide to make a meal or snack in the combined kitchen and main living area which offers all the appliances you need, plus a kitchen island with two bar stools, a pantry, an LED TV with a fireplace below, plus a slide out four-seat sofa. The garage even offers the option to use two Happi-Jac rollover sofas with tables with a top bed if you want seating and sleeping space. The overhead loft bed provides sleeping space as well. You will love the sunken tub/shower with a seat in the full bathroom with a space saving sliding door, and the front bedroom can be your escape. There is a queen bed, a slide out wardrobe and USB charging outlets.

With any Momentum M-Class toy hauler by Grand Design, you will enjoy luxury at every turn! They have been constructed to a superior standard with a thermal roof design, triple insulated main floor and garage floor, and a Rail-Tite underbelly seal that will allow you to camp in all elements. Each model also features an 8' 5" wide body chassis with a wide rail design, no wheel wheels, and a dovetail entry for easier loading. The Stealth A/C system provides maximum cooling power, and the CRE3000 suspension system means you can enjoy a smooth tow each time. You will love the luxurious interior with a professional grade stainless steel cooktop, interior color changing LED accent lighting, a fiberglass shower with a glass door, and solid surface countertops. 

Grand Design Momentum M-Class toy hauler 398M highlights:

• 18' Separate Garage
• Bedroom Wardrobe Slide
• Four-Seat Sofa
• Kitchen Island with Bar Stools
• Dual Entry Doors
• Flip Up Pet Dish

Load up your toys, gear, clothes and food to enjoy some off-road fun with your toys and friends! Once at the RV park, unload your toys and set up the three slide outs, the two awnings, and begin planning your trail rides! You might decide to make a meal or snack in the combined kitchen and main living area which offers all the appliances you need, plus a kitchen island with two bar stools, a pantry, an LED TV with a fireplace below, plus a slide out four-seat sofa. The garage even offers two Happi-Jac rollover sofas with tables with a top bed if you want seating and sleeping space. The overhead loft bed provides sleeping space as well. You will love the sunken tub/shower with a seat in the full bathroom with a space saving sliding door, and the front bedroom can be your escape. There is a queen bed, a slide out wardrobe and USB charging outlets.

With any Momentum M-Class toy hauler by Grand Design, you will enjoy luxury at every turn! They have been constructed to a superior standard with a thermal roof design, triple insulated main floor and garage floor, and a Rail-Tite underbelly seal that will allow you to camp in all elements. Each model also features an 8' 5" wide body chassis with a wide rail design, no wheel wheels, and a dovetail entry for easier loading. The Stealth A/C system provides maximum cooling power, and the CRE3000 suspension system means you can enjoy a smooth tow each time. You will love the luxurious interior with a professional grade stainless steel cooktop, interior color changing LED accent lighting, a fiberglass shower with a glass door, and solid surface countertops. 

Grand Design Momentum M-Class toy hauler 398M highlights:

• 18' Separate Garage
• Bedroom Wardrobe Slide
• Four-Seat Sofa
• Kitchen Island with Bar Stools
• Dual Entry Doors
• Flip Up Pet Dish

Load up your toys, gear, clothes and food to enjoy some off-road fun with your toys and friends! Once at the RV park, unload your toys and set up the three slide outs, the two awnings, and begin planning your trail rides! You might decide to make a meal or snack in the combined kitchen and main living area which offers all the appliances you need, plus a kitchen island with two bar stools, a pantry, an LED TV with a fireplace below, plus a slide out four-seat sofa. The garage even offers the two Happi-Jac rollover sofas with tables with a top bed for extra seating and sleeping space. The overhead loft bed provides sleeping space as well. You will love the sunken tub/shower with a seat in the full bathroom with a space saving sliding door, and the front bedroom can be your escape. There is a queen bed, a slide out wardrobe and USB charging outlets.

With any Momentum M-Class toy hauler by Grand Design, you will enjoy luxury at every turn! They have been constructed to a superior standard with a thermal roof design, triple insulated main floor and garage floor, and a Rail-Tite underbelly seal that will allow you to camp in all elements. Each model also features an 8' 5" wide body chassis with a wide rail design, no wheel wheels, and a dovetail entry for easier loading. The Stealth A/C system provides maximum cooling power, and the CRE3000 suspension system means you can enjoy a smooth tow each time. You will love the luxurious interior with a professional grade stainless steel cooktop, interior color changing LED accent lighting, a fiberglass shower with a glass door, and solid surface countertops. 

Grand Design Momentum M-Class toy hauler 398M highlights:

• 18' Separate Garage
• Bedroom Wardrobe Slide
• Four-Seat Super Sofa
• Kitchen Island with Bar Stools
• Dual Entry Doors
• Flip Up Pet Dish

Load up your toys, gear, clothes and food to enjoy some off-road fun with your toys and friends! Once at the RV park, unload your toys and set up the three slide outs and two awnings, and begin planning your trail rides! You might decide to make a meal or snack in the combined kitchen and main living area which offers all the appliances you need, plus a kitchen island with two bar stools, a pantry, an LED TV with a fireplace below, plus a slide out four-seat sofa. The garage even offers sofas and an overhead bed plus two additional Happi-Jac rollover sofas with tables with a top bed if you want seating and sleeping space. The overhead loft bed provides sleeping space as well. You will love the shower with a seat in the full bathroom with a space saving sliding door, and the front bedroom can be your escape. There is a queen bed, a slide out wardrobe and USB charging outlets.

With any Momentum M-Class toy hauler by Grand Design, you will enjoy luxury at every turn! They have been constructed to a superior standard with a thermal roof design, triple insulated main floor and garage floor, and a Rail-Tite underbelly seal that will allow you to camp in all elements. Each model also features an 8' 5" wide body chassis with a wide rail design, no wheel wheels, and a dovetail entry for easier loading. The Stealth A/C system provides maximum cooling power, and the CRE3000 suspension system means you can enjoy a smooth tow each time. You will love the luxurious interior with a professional grade stainless steel cooktop, interior color changing LED accent lighting, a fiberglass shower with a glass door, and solid surface countertops.