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New 2021 Grand Design Momentum M-Class 398M

Virtual Tour Sold
2021 398M Features and Options

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

  • Rear Patio
  • Loft
  • Four-Seat Sofa
  • Kitchen Island w/ Stools
  • 18' Separate Garage
  • Opposing Slides

 

Imagine your family taking turns riding your four wheelers around the dunes or taking the jet skis on the lake. This Momentum M-Class fifth wheel toy hauler offers an 18' separate garage for your toys and a second exterior entry door for easy access when the ramp door is closed. You can store additional outdoor gear in the exterior unobstructed pass-through storage near the main entrance. Now imagine your family watching the big game on the 49" LED TV with a fireplace below while sitting on the bar stools at the kitchen island or on the four-seat sofa. Now stop imagining and start living the dream in this M-Class!

 

With any Grand Design Momentum M-Class toy hauler fifth wheel, you will enjoy extraordinary living and extreme playtime with the Weather-Tek insulation for four seasons of protection and an enclosed fuel pump station to keep the fun going the whole time. The Tuff-Ply garage flooring is gas and oil resistant as well as triple insulated, and you will find 2,500-lb. flush-mount tie-downs in the garage to keep your toys secure while moving down the road. The interior includes features that are both fun and functional, like the stereo entertainment system with Bluetooth and app controls, the color-changing LED lights, the central vacuum system with tools and a dust pan, and the satellite/solar roof access channel. Any Grand Design Momentum M-Class allows you to keep your active lifestyle no matter where you decide to stay!  

Options:
  • 18CU FT REFRIGERATOR
  • 2ND A/C BEDROOM 15K BTU
  • 2ND HEAT PUMP GARAGE
  • 3RD A/C 15K BTU
  • 3RD A/C PREP
  • AUX FRESH WATER TANK
  • CONVECTION MICROWAVE
  • EXTERIOR ENTERTAINMENT CENTER
  • GARAGE LED HD TV
  • GEN II 3 SEASON DOOR W/SLIDING WINDOWS
  • HAPPI-JAC ELECTRIC BUNK SYSTEM
  • HEAT PUMP A/C
  • KITCHEN POWER FAN W/RAIN SENSOR
  • LOAD RANGE G TIRE UPGRADE
  • M-CLASS EXTERIOR PACKAGE
  • M-CLASS GARAGE PACKAGE
  • M-CLASS INTERIOR PACKAGE
  • MOMENTUM PATIO CHAIRS
  • ONAN 5.5KW GAS GENERATOR
  • REAR ALUMINUM DECK SYSTEM
  • ROCKFORD FOSGATE SPEAKER UPGRADE
  • RVIA SEAL
  • SOLAR PACKAGE
  • SOLAR PREP
  • UNDER UNIT LED LIGHT KIT
  • WEATHER-TEK INSULATION PACKAGE
  • WINTERIZATION
What Our Customers Are Saying

Thank You

"We have had the best experience with Happy Daze. They were very helpful, worked with us on a new trailer, then a trade in to an RV. Friendly staff, tries really hard to keep you informed and knowing what they are doing and why. All steps of the process were easy to navigate through. The staff works hard on the customer's behalf. Couldn't have been a better experience. Cheryle is a GEM!!!" - Marcy
MSRP: $115,619
Location: Sacramento
Stock# 65437
2021 398M Specifications
Sleeps 5
Slides 3
Length 43 ft 11 in
Ext Height 13 ft 5 in
Interior Color OAKLEY
Hitch Weight 2980 lbs
Gross Weight 20000 lbs
Dry Weight 15000 lbs
Fresh Water Capacity 155 gals
Grey Water Capacity 104 gals
Black Water Capacity 52 gals
Tire Size 16"
Furnace BTU 40000 btu
Fuel Capacity 60 gals
Available Beds Queen
Refrigerator Size 18 cu ft
Cooktop Burners 3
Number of Awnings 2
Axle Weight 7000 lbs
Garage Size 18 ft
LP Tank Capacity 60 lbs
Water Heater Capacity 12 gal
Water Heater Type Gas/Electric
AC BTU 30000 btu
TV Info LR 49" LED TV
Awning Info 15' and 18' Power with LED Lights
Axle Count 3
Washer/Dryer Available Yes
Shower Type Sunken Tub/Shower
Electrical Service 50 amp
VIN 573FM4534M1116643
For more information, call us at 916-921-2222 or Contact Us
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ManuFacts
Grand Design Logo
Thank you for taking the time to look at Grand Design RV.  We would like to share some insights into what sets Grand Design RV Company apart from all other RV manufacturers and why this difference is important to you.   We were part of the original ownership team that led a top RV Manufacturer to become the largest travel trailer and fifth wheel company in the world.  While proud of our accomplishments at this company,  it became difficult to stay in touch with the needs of our customers, employees and ultimately the products we built.  In 2011, we set out to pursue our dream and re-establish the personal connection we had enjoyed with customers and dealers.  The result is Grand Design RV Company.  Starting with a blank canvas, we were able to do things differently than what had been done before. 
 
After achieving unparalleled years of growth, Grand Design formed an alliance with one of the industry's most iconic brands...Winnebago. Operating as an independent business within Winnebago Industries provides additional financial stability and enables us to continue Grand Design's unique way of doing business for our current and future customers.
 
LONG TERM VALUE Everything we do at our company is designed to build long term value in what we offer our customers, “more features and superior value for your dollar.” 
 
CUSTOMER FOCUS Our focus (from the very first day we opened our doors) revolves around our customers.
 
STAYING CONNECTED Magic happens when the President and Senior Management are all actively working in the production facilities to help build the team and develop products.
 
EXPERIENCED WORKFORCE Our local workforce has been hand-picked, and has an excellent reputation for quality craftsmanship that is second to none.
 
CLASS LEADING WARRANTY  We back every one of our coaches by a 3-year limited structural warranty.
 
RAISING THE QUALITY BAR   We put every Grand Design unit through a series of quality inspection gates during the manufacturing process.  Once completed, the unit undergoes a comprehensive final finish inspection.  From here, most manufacturers ship their units on to the dealer for retail sale.  Not Grand Design...Every one of our units are shipped to a separate PDI (Pre-Delivery Inspection) location where they are again put through a 280+ point inspection process.  It is only after this that we deem a unit ready to ship to our dealers.    
 
SUPERIOR SERVICE  We deliver the highest quality in the industry, but anything built by humans can be subject to issues.  It’s how those issues are addressed that stands out with Grand Design.  Don’t just take our word for it, visit the owners page on Facebook (Grand Design RV Owners) and see for yourself how we take care of our customers after the sale.  An informed customer will be a Grand Design customer!
 
At Grand Design our goal is simple...Continue leading the industry with quality products while improving the customer's RV experience before, during, and after the sale.
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.