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The values presented on this site are for estimation purposes only. Your actual payment may vary based on several factors such as down payment, credit history, final price, available promotional programs and incentives. Applicable tag, title, destination charges, taxes and other fees and incentives are not included in this estimate.

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2020 Grand Design GRAND DESIGN Momentum Momentum 399TH

  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Used-2020-Grand Design-Momentum 399TH
  • Pre-owned
  • United Motorsports & Rv
  • RV1030-AL
  • 573FM4531L1115822
  • Trailer
  • Toy Hauler
  • 44 ft 9 in
  • 15900 lbs
The 2020 Grand Design Momentum 399TH is where rugged adventure meets residential luxury. Built for those who refuse to compromise, this premium toy hauler fifth wheel offers the perfect balance of comfort, style, and utility. With its expansive garage space, you’ll have plenty of room for ATVs, motorcycles, or other toys, while still enjoying all the high-end amenities of a luxury RV.
Step inside and you’ll be greeted by a spacious interior featuring residential-style furnishings, a gourmet kitchen with solid-surface countertops, and a cozy living area complete with theater seating and an entertainment center. The master suite offers a true retreat with a king-size bed, ample storage, and a private bathroom, while additional sleeping areas in the loft and garage make it ideal for family and guests.
Designed with convenience in mind, the Momentum 399TH also boasts a rear patio deck, multiple awnings, and cutting-edge climate control systems to keep you comfortable in any season. Whether you’re exploring off-grid trails or enjoying extended stays at your favorite RV resort, this toy hauler delivers unmatched performance and luxury.
  • Pre-owned
  • RV1030-AL
  • 2020
  • Grand Design
  • Momentum 399TH
  • Trailer
  • Toy Hauler
  • GRAND DESIGN Momentum
  • 573FM4531L1115822
  • 44 ft 9 in
  • 15900 lbs
  • 3400
  • No
    • Bath and a Half
    • Front Bath
    • Front Bedroom
    • King Bed
    • Kitchen Island
    • Rear Bath
    • Rear Entertainment
    • Loft
    • Fireplace
    • Microwave Oven
    • Power Awning
    • Wardrobe / Closet
    • Patio Deck
    • 3 Burner Cooktop
    • LED Lighting
    • Outside Speakers
    • Two Entry / Exit Doors
    • Skylights
    • Free Standing Dinette Table
    • Theater Seats

Get an Estimate for Your Payment

  • Estimated Payment
  • Calculation is estimate only.

Advertised pricing excludes applicable taxes title and licensing, dealer set up, destination, reconditioning and are subject to change without notice. Pricing may exclude any added parts, accessories or installation unless otherwise noted. Sale prices include all applicable offers. Not all options listed available on pre-owned models. Contact dealer for details.