New 2025 Forest River RV RiverStone 421FK Fifth Wheel

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2025 421FK Features and Options

Forest River RiverStone fifth wheel 421FK highlights:

  • Kitchen Island
  • Front Kitchen
  • Theater Seats
  • Dual Vanity Sink
  • Stackable Washer and Dryer


You will feel right at home in this fifth wheel! The rear private bedroom has a 72" x 80" king bed slide for a good night's rest, a rear large wardrobe with the washer and dryer next to it, and even a dresser with a 40" LED TV. Two can get ready at once in the full bathroom with the dual sink vanity then head to either the desk slide to get some work done or whip up some scrambled eggs on the three burner cooktop at the island in the front kitchen. The kitchen even has a dishwasher for easy clean up and two bar stools at the high top dinette that overlooks the middle living area. Relax each night in true comfort on either the E-Z Glide sofa bed slide or the theater seating across from the entertainment center which has a fireplace and 65" Samsung LED Smart TV to watch your favorite movies!


The Forest River RiverStone fifth wheels and toy haulers are luxurious units that have it all! You'll find an automatic six-point hydraulic level-up system to keep your unit in place, and there is preparation for a four-camera observation system. The King Wi-Fi Max router and omni-directional Wi-Fi antenna/extender will help you stay connected to the outside world, and you'll never have to overpack again since the Splendid “Astral” stackable washer and dryer will let you clean the small amount of clothes you've brought with you. Another high luxury is the Fischer Paykal dishwasher which will allow you to spend more time enjoying your camp life and less time cleaning up. Each unit is built with a Trail-Aire Road Armour suspension system, dual-pane frameless windows, a full docking station, a 190W solar panel, and a Firefly integrated touch control system. 

What Our Customers Are Saying

Went above and beyond!

Randy and Tim helped us out. We needed some new batteries on our trip from Indianapolis to Bend, OR. Not only did they get us the batteries, when we needed a new connection made they drove us down to the local Napa and got us back. Also stayed open an hour past closing to make sure we were good. - Dan
Price: $206,723
Lazydays RV
Location: Ocala, FL
Stock# 21154477
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RV ID: 2479933#
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2025 421FK Specifications
Sleeps 4
Slides 5
Length 44 ft
Ext Width 8 ft 6 in
Ext Height 13 ft 4 in
Exterior Color Riptide Red
Hitch Weight 3270 lbs
GVWR 24000 lbs
Dry Weight 18331 lbs
Cargo Capacity 5669 lbs
Fresh Water Capacity 79 gals
Grey Water Capacity 120 gals
Black Water Capacity 40 gals
Tire Size 17.5"
Furnace BTU 40000 btu
Available Beds King
Refrigerator Type French Door with Ice Maker
Refrigerator Size 18 cu ft
Cooktop Burners 3
Number of Awnings 2
Axle Weight 8000 lbs
LP Tank Capacity 40 lbs
Water Heater Type Truma Aqua Go Comfort On Demand
AC BTU 30000 btu
TV Info LR 65" Samsung LED Smart TV, BR 40" LED TV
Awning Info 11' 6" and 18' Solera Electric with LED Lights
Axle Count 2
Washer/Dryer Available Yes
Number of LP Tanks 2
Shower Type Standard
Electrical Service 50 amp
For more information Contact Us

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