Skip to main content
Skip to navigation
Accessibility settings
RV Envy
Browse RV floor plans
Inventory
Dealers
Dashboard
Class A motorhomes
Class C motorhomes
Class B vans
Fifth wheel trailers
Travel trailers
Pop-up campers
Advanced search
Floor plan wizard
Inventory
Dashboard
RV floor plans
Inventory
Guides
More
Home
Fifth wheel trailers
Forest River
RiverStone
421FK
RiverStone 421FK for sale
33 units for sale from $116,995–$225,989
Available inventory
Year
Status
Dealer
MSRP
Sale price
2025
new
Bullyan RV
Duluth, MN
·
#32408
$207,705
$116,995
Visit listing
2024
used
Blue Compass RV — Boerne
Boerne, TX
·
#UT2700548
Not listed
$119,062
Visit listing
2024
used
Robert Crist RV
Mesa, AZ
·
#P4880A
$149,995
$119,952
Visit listing
Bullyan RV
2025
·
new
·
#32408
$207,705
$116,995
Blue Compass RV — Boerne
2024
·
used
·
#UT2700548
$119,062
Robert Crist RV
2024
·
used
·
#P4880A
$149,995
$119,952
Sign up to see 33 available units
See units
Accommodations
Sleeps
4
RiverStone 421FK for sale (33 available) | RV Envy
