Description
Year: 2021
Make: Grand Design
Model: Momentum G-Class 320G
RV Type: Fifth Wheel Toy Hauler
Condition: Used
Length: 36 ft 3 in
GVWR: 16,400 lbs
Sleeping Capacity: 5
Slide-Outs: 3
Garage Length: 11 ft
Weights & Capacities (Approx.)
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UVW: 12,400 lbs
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Pin Weight: ~2,300 lbs
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Fresh Water: 98 gal
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Gray Water: 52 gal
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Black Water: 104 gal
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Fuel Station: 30 gal
Power & Off-Grid Capability (Upgraded)
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600Ah lithium battery bank
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1,200W roof-mounted solar array
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Victron Energy full power management system
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Whole-house inverter configuration
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Multiple power sources: solar, generator, or 50A shore power
Climate & Utilities
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Three roof-mounted air conditioners
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Auto-leveling system
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Electric door locks
Garage & Toy Hauler Features
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11 ft garage
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HappiJac bed/dinette system
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1.5 bathrooms (garage half bath)
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3-season rear patio doors
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Rear patio deck system
Kitchen & Interior
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Residential-style kitchen layout
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Ample cabinetry and storage
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Well-appointed living area with seating and entertainment space
Technology & Safety
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Haloview camera system with in-cab monitor
Tires & Maintenance
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New tires installed in 2025
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Recent roof reseal
Exterior & Construction
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Pre-COVID build
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High-quality Grand Design construction
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Exterior height: 13 ft 6 in
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Exterior width: 8 ft 5 in (body)
Condition & Ownership
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Clear title
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Non-smoker
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Pet-free
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Clean and well maintained
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Systems represented as operational
Description
2021 Grand Design Momentum G-Class 320G fifth wheel toy hauler measuring just over 36 feet with three slide-outs and an 11-foot garage. Features extensive off-grid upgrades including a 1,200W solar array, 600Ah lithium battery bank, Victron power management system, onboard generator, and fuel station. Offers a 1.5-bath layout, HappiJac garage sleeping system, three air conditioners, rear patio doors and deck, auto-leveling, and upgraded camera system. Pre-COVID build with recent tires and roof service, well suited for extended travel or off-grid use.


