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Photo of Rv
Photo of Rv
  • Price: $99,000
  • Year: 2023
  • Model: MOMENTUM 399TH
  • Property ID: 7018272
  • Partner ID: 5039673899
  • Posted On: Mar 17, 2026
  • Updated On: Mar 17, 2026

RV Description

2023 Grand Design Momentum 399TH Toy Hauler Side Patio 13 Garage Like New

For sale is our 2023 Grand Design Momentum 399TH, one of the most sought-after luxury toy haulers on the market. This rig is in excellent condition, very lightly used, and fully ready for travel or full-time living. The 399TH is known for its massive garage, side patio, bath and a half layout, and premium Grand Design build quality.

This unit offers a 13 garage, making it perfect for hauling motorcycles, UTVs, golf carts, or other toys while still providing a comfortable luxury living space.

Key Features:
        13 Toy Hauler Garage
        Side Patio with Entry Door
        Rear Patio System
        Bath and a Half Layout
        3 Air Conditioners
        Auto Leveling System
        Fuel Station for Toys
        Onboard Generator
        Washer/Dryer Prep
        Large Residential Refrigerator
        Kitchen Island with Solid counters
        Fireplace and Entertainment Center
        Power Awnings with LED Lighting
        King Bed in Master Bedroom
        Plenty of Storage Throughout

The garage converts into additional sleeping space with electric HappiJac beds and opposing sofas, making this RV great for family trips or hosting guests.

Additional Specifications

This 2023 Grand Design Momentum 399TH measures approximately 43 in length with a GVWR of around 20,000 lbs and a dry weight of about 15,900 lbs, making it a robust fifth-wheel toy hauler built for extended trips or full-time use. It features a 6-point hydraulic auto-leveling system, dual power awnings, large pass-through storage, and a 100-gallon fresh water capacity with separate gray and black tanks for extended boondocking capability. The insulated construction and heated underbelly make it suitable for a wide range of climates while maintaining comfort on the road.


Grand Designs Momentum series is known for its durability and high-end finishes, and this model is one of the most popular toy haulers they make.

The RV is clean, well maintained, waxed, and ready to go.

Asking Price: $109,000
Serious inquiries only.

Feel free to message with any questions or to schedule a time to see it.

Listed By:

Owner
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