RVs, Campers, Motorhomes and Caravans » Forest River RV » Riverstone 421FK

Forest River RV Riverstone 421FK Specifications

Specifications

Overall length42.9 ft
Dry weight15000-16000 lb
Gross vehicle weight rating (gvwr)18,000 lb
Hitch weight2600-3000 lb
The above specifications are based on the 2016 model year.

Forest River RV Riverstone 421FK description

The Forest River RV Riverstone 421FK is a premium fifth-wheel designed for extended travel and full-time comfort. It blends residential-style amenities, spacious living areas and multiple slideouts to create a luxurious, home-like interior ideal for families or couples who want high-end features on the road.

Currently For Sale

  • 2025 Forest River RV RiverStone

    2025 Forest River RV RiverStone 421FK

    • Manufacturer: Forest River RV
    • Model: Riverstone 421FK
    • Gross weight: 8,164.66 kg
    • Tire size: 17.5"

    Description No Fees 5500 ONAN GENERATOR OPTIONAL! ONLY $6,500! DECORATOR WHITE WOOD!!! SWITCHBACK TOBACCO FURNITURE!!! 3RD HIGH PERFORMANCE A/C W/ HEAT PUMP!!! 4 CAMERA SYSTEM W/ 7" MONITOR REAR/SIDE/ENTRY VIEW!!...

    $129,999 USD
    Bunker Hill, IN
  • 2026 Forest River RV RiverStone

    2026 Forest River RV RiverStone 421FK

    • Manufacturer: Forest River RV
    • Model: Riverstone 421FK
    • Gross weight: 8,164.66 kg
    • Tire size: 17.5"

    Description 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 p...

    Grand Rapids, MI
  • 2025 Forest River RV RiverStone

    2025 Forest River RV RiverStone 421FK

    • Manufacturer: Forest River RV
    • Model: Riverstone 421FK
    • Gross weight: 8,164.66 kg
    • Tire size: 17.5"

    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 bedro...

    $129,977 USD
    Madison, AL
  • 2025 Forest River RV RiverStone

    2025 Forest River RV RiverStone 421FK

    • Manufacturer: Forest River RV
    • Model: Riverstone 421FK
    • Gross weight: 8,164.66 kg
    • Tire size: 17.5"

    The New 2025 Forest River RV RiverStone 421FK represents the pinnacle of luxury in fifth wheel design. Built for full-time RVers, extended road trips, and travelers who refuse to compromise on comfort or quality,...

    $125,977 USD
    Madison, AL
  • 2025 Forest River RV RiverStone

    2025 Forest River RV RiverStone 421FK

    • Manufacturer: Forest River RV
    • Model: Riverstone 421FK
    • Gross weight: 8,164.66 kg
    • Tire size: 17.5"

    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 bedro...

    $129,977 USD
    Madison, AL
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