2026 Forest River RiverStone 421FK
New Fifth Wheel in Middlebury, Indiana, 46540
Unit Specs
- Stock #R005387
- Year2026
- ManufacturerForest River
- Make Forest River
- ModelRiverStone
- Floorplan421FK
- Floorplan LayoutFront Kitchen
Kitchen Island
Rear Bedroom - Type Fifth Wheel
- ConditionNew
- Length44' 0"
- VIN4X4FRS836T0005387
- Price $219,529.00
- Sale Price $144,995.00
- Need to know your payment? Use our RV Loan Calculator!
- Sleeps4
- Water Capacity (Fresh)79 gal
- Water Capacity (Black)40 gal
- Water Capacity (Grey)120 gal
- Slideouts6
- Tow/Hitch Weight3635 lbs
Forest River RiverStone 421FK Fifth Wheel for Sale in Middlebury, IN
Experience residential-style fifth wheel living in the Forest River RiverStone 421FK at Royal RV Center in Middlebury, Indiana. Featuring a spacious front kitchen, center living area, private rear king bedroom, dual-vanity bathroom, and dedicated desk, the RiverStone 421FK offers an upscale layout designed for extended stays and travelers who appreciate room to settle in.
RiverStone 421FK Highlights
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Residential front kitchen
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Large kitchen island
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Fisher & Paykel dishwasher
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Three-burner cooktop
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High-top dinette with bar stools
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Theater seating
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E-Z Glide sofa bed
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Fireplace
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65" Samsung Smart TV
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Dedicated desk slide
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72" x 80" king bed slide
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Stackable washer and dryer
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Dual bathroom vanities
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Six-point hydraulic auto-leveling
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200W solar panel
Residential Front Kitchen
The front kitchen provides a dedicated cooking space with generous cabinetry, ample storage, and a large island for meal preparation. A three-burner cooktop and Fisher & Paykel dishwasher add residential convenience.
A high-top dinette with bar stools overlooks the living area, creating a comfortable place for meals while maintaining an open connection between the kitchen and lounge.
Spacious Living & Workspace
The center living room features theater seating positioned across from the entertainment center, complete with a fireplace and 65" Samsung Smart TV. An E-Z Glide sofa bed provides additional seating and sleeping accommodations for guests.
A dedicated desk slide creates a separate workspace for remote work, trip planning, or other everyday tasks.
Private Rear King Bedroom
The rear bedroom provides a private retreat with a 72" x 80" king bed slide, large rear wardrobe, dresser, and 40" LED TV. A stackable washer and dryer adds valuable convenience for longer trips and extended stays.
Dual-Vanity Bathroom
The full bathroom features dual vanity sinks, a spacious shower, and storage for linens and everyday essentials, giving two people more room to get ready.
Premium Travel Technology
A six-point hydraulic auto-leveling system simplifies campsite setup, while LCI Road Armour suspension supports the towing foundation. Dual-pane frameless windows and a full docking station add additional functionality.
Technology includes a BMPro touch control system, TravlFi 4G/LTE router with WiFi extender, prep for a four-camera observation system, and a 200W solar panel for additional charging capability.
If you're searching for a Forest River RiverStone 421FK fifth wheel for sale in Indiana, Michigan, or Ohio, explore this residential front-kitchen floorplan at Royal RV Center.
Visit Royal RV Center in Middlebury, IN, proudly serving Indiana, Michigan, Ohio, and beyond.
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- Kitchen Island
- Rear Bedroom
2026 Forest River RiverStone 421FK Features
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Exterior
Slideout
2026 Forest River RiverStone 421FK Specifications
Height
13' 4"
Length
45' 0"
Width
8' 6"
Dry Weight
18,331 lbs
GVWR
24,000 lbs
Hitch Weight
3,270 lbs
Payload Capacity
5,669 lbs
Refrigerator Capacity
18 cu ft
Sleep Capacity
4
Water Capacity - Black
40 gal
Water Capacity - Fresh
79 gal
Water Capacity - Grey
120 gal
# Awnings
2
# Axles
2
# Doors
1
# Slides
5
Hitch
Fifth Wheel
# A/C
2
A/C Spec
15,000 BTU High Performance Quiet Cool A/Cs with Heat Pumps
Unit Specs
- Stock #R005387
- Year2026
- ManufacturerForest River
- Make Forest River
- ModelRiverStone
- Floorplan421FK
- Floorplan LayoutFront Kitchen
Kitchen Island
Rear Bedroom - Type Fifth Wheel
- ConditionNew
- Length44' 0"
- VIN4X4FRS836T0005387
- Price $219,529.00
- Sale Price $144,995.00
- Need to know your payment? Use our RV Loan Calculator!
- Sleeps4
- Water Capacity (Fresh)79 gal
- Water Capacity (Black)40 gal
- Water Capacity (Grey)120 gal
- Slideouts6
- Tow/Hitch Weight3635 lbs
Estimated Payment-
Email Dealer
Request More Info on this 2026 Forest River RiverStone 421FK Offered for sale by Royal RV Center
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