New 2026 Forest River RV RiverStone 421FK Fifth Wheel

LEGACY PACKAGE WITH FULL BODY PAINT!
Virtual Tour Front Kitchen Luxury
2026 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. And two can get ready at once in the full bathroom with the dual sink vanity. You can 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 TravlFi Journey XTR 4G/LTE router and WiFi 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 LCI Road Armour suspension system, dual-pane frameless windows, a full docking station, a 200W solar panel, and a BMPro touch control system. 

 

PLEASE NOTE: GENERIC IMAGES AND/OR GENERIC DESCRIPTIONS ABOUT UPGRADES MAY BE USED AND MAY NOT FULLY REPRESENT THE ACTUAL TRAILER. FOR THE MOST ACCURATE INFORMATION AND PHOTOS, PLEASE CONTACT US DIRECTLY.

 

Options:
  • MAX GRAPHICS PACKAGE W/PAINTED CAPS
  • LUXURY PACKAGE
  • ULTIMATE ELECTRONICS PACKAGE
  • LEGACY PACKAGE W/PREMIUM FULL BODY PAINT: 100AH LITHIUM BATTERY, 3RD HIGH PERFORMANCE AC W/HEAT PUMP, HYDRAULIC DISK BRAKES, ADDITIONAL 400W OF SOLAR PANELS, LCI WASTE MASTER SYSTEM
  • PREMIUM PACKAGE: HELUX COILED PIN BOX, 4 CAMERA SYSTEM, SLIDE ROOM AWNING TOPPERS W/ METAL WEATHER SHIELDS, OUTSIDE TV, STARLINK STD KIT
  • 5.5 ONAN MARQUIS GOLD GENERATOR
What Our Customers Are Saying

Great Service

Great service, super friendly and very patient answering a hundred questions. Finance lady Christen was very helpful in getting us the best deal. All wonderful people, thank you all so much. - Tricia
Price: $228,948
You Save: $63,953
Sale Price: $164,995
Happy Camper RV Sales, LLC
Location: Superstore Caldwell
Stock# T0005366
To get help now on this RV, call and enter the RV ID if prompted.
RV ID: 3172008#
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2026 421FK Specifications
Sleeps 4
Slides 6
Length 44 ft
Ext Width 8 ft 6 in
Ext Height 13 ft 4 in
Interior Color COCOA BEAN-RIPPLEBROOK
Exterior Color FROST
Hitch Weight 3635 lbs
GVWR 24000 lbs
Dry Weight 18786 lbs
Cargo Capacity 5214 lbs
Fresh Water Capacity 79 gals
Grey Water Capacity 120 gals
Black Water Capacity 40 gals
Tire Size 17.5"
Furnace BTU 40000 btu
Generator 5.5 ONAN MARQUIS GOLD
Available Beds King
Refrigerator Type French Door with Ice Maker
Refrigerator Size 18 cu ft
Convection Cooking Yes
Cooktop Burners 4
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" Smart LED TV
Awning Info 16' Electric with LED Lights
Axle Count 2
Washer/Dryer Available Yes
Number of LP Tanks 2
Shower Type Standard
Electrical Service 50 amp
Solar Wattage 600 watts
VIN 4X4FRS839T0005366
For more information Contact Us

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Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. Where an image has a stock image indicator, please confirm specific unit details with your dealer representative.