2022 Grand Design Solitude 390RK

2022 Grand Design Solitude 390RK
Rear Kitchen Fifth Wheel • 880W Solar w/ 400Ah Lithium • Full Victron Power System • 8K Heavy-Duty Axles w/ Disc Brakes • Onboard Generator

This 390RK is built for buyers who want to go further off the grid without giving up comfort. Grand Design's rear-kitchen layout gives you a true residential feel, and this particular unit has been upgraded with a serious power system and running gear that most Solitudes on the market simply don't have. Whether it's extended boondocking or full-time living, this coach is ready.

Chassis, Power & Driving Confidence

• 8K Heavy-Duty Axles – upgraded from standard for more carrying capacity and a smoother, more stable tow

• Electric-Over-Hydraulic Disc Brakes – stops roughly 40 ft shorter at 50 mph than standard drum brakes, for real peace of mind behind the wheel

• New Truck Tires (installed 2022) – fresh rubber means no surprises on the road, one less thing to worry about before a trip

• MORryde Rubber Pin Box – absorbs road shock and rough towing for a smoother ride and less wear on the frame

Off-Grid & Electrical Systems

• 880W Solar Array (4x 220W Panels) – serious solar capacity for extended time off-grid without hunting for shore power

• 400Ah Lithium Battery Bank – deep reserve capacity with faster charging and far longer life than standard lead-acid batteries

• Victron 3kVA Inverter (2x120, 12/3000) – a major upgrade over the factory 2000W unit, giving you enough power to run real appliances off-grid

• Victron Cerbo GX – full system monitoring and control from one central hub, so you always know your power status

• Victron Solar Charge Controller – efficiently manages your solar input for faster, cleaner battery charging

• Onboard Generator – backup power on demand, rain or shine, no sun required

• Low Tow Use – towed only around 10,000 miles, meaning minimal wear on the chassis, suspension, and running gear

Interior Living

• Fireplace Entertainment Center w/ LED TV – ambiance and entertainment in one built-in unit

• Theater Seating – comfortable recliner seating for movie nights or unwinding after a day of travel

• Free-Standing Dinette – flexible seating that doesn't lock you into a booth

• Tri-Fold Sofa – extra sleeping space for guests without sacrificing living room comfort

Kitchen & Laundry

• Compact Combo Washer/Dryer (installed) – built-in laundry capability without giving up storage or floor space

• 24" Residential Range – real cooking capability, not a cramped RV cooktop

• Pass-Thru & Pantry Storage – plenty of room for kitchen goods and supplies

Bedroom & Bath

• California King Bed w/ Purple Mattress – a true residential sleep setup, rare in a towable of this size

• Double Vanity – uncommon in a fifth wheel this size, giving two people real room to get ready at once

• Flip-Top Dresser w/ LED TV – smart storage with built-in entertainment

• Shower w/ Skylight – bright, spacious bathroom feel

• Solid Surface Bathroom Countertops – durable, easy-care finish

Exterior

• 16' Power Awning – shade and outdoor living space on demand

• Aluminum Wheels – clean, upgraded look

• Heated & Enclosed Underbelly – protects tanks and plumbing in cold weather

• Pass-Thru Storage – secure, weatherproof storage for gear

What sets this 390RK apart isn't just the floorplan — it's the money that's already been invested in it. Between the 880W solar array with 400Ah lithium storage, the Cal King Purple mattress, double vanity, and 8K axles with disc brakes, this unit is ready to head off-grid with confidence and real residential comfort.