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New 2025 Forest River RV RiverStone 421FK

Fifth Wheel

Stock #09229

Belleville, MI

1 of 20

+20

MSRP: $208,772

Payments From: $1,421 /mo.

Salesperson

Mike Moynihan

Email Mike Moynihan

313-899-5424

Sleeps 4
5 Slides
Front Kitchen

Kitchen Island

45ft Long
18,331 lbs

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Specifications

Sleeps	4	Slides	5
Length	45 ft	Ext Width	8 ft 6 in
Ext Height	13 ft 4 in	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
VIN	4X4FRS838S0004739

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 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.

Features

Standard Features

Standard Interior Package

Insignia 3.7 CF oven with 4 burner range
Upgraded Calcutta Solid Surface Countertop in kitchen
Large Stainless Steel Kitchen Sinks with Residential Faucet
18 CU. FT. French Door Refrigerator with Ice Maker
Residential Soft Close Drawer Glides
Shaw Residential Vinyl Flooring
LED Lighting Throughout
30” Stainless Steel Microwave
Oval Porcelain Toilet with Foot Flush
Central Vacuum System
40,000 BTU Furnace
10” Thick Memory Foam Mattress 72”x80” Standard --(Toy haulers 66”x80”)
Shaw Stain Resistant Carpet (in slide rooms)
Day/Night Roller Shades Throughout
5200 BTU Fireplace in Living Room
Butcher Block Cutting Board Sink Covers
Overhead Storage Cabinets in Main Level Living Room Sofa/Desk Slides
Residential Soft Close Hinges on Cabinet Doors
Under-bed Storage Compartment
Residential Style Tile Backsplash

Standard Exterior Package

Residential Style Insulation, Featuring a Dual Vapor Barrier giving you R-16 Insulation Value in the Side-walls (Including the Slide Rooms)
R-38 Insulation Value in Roof and Flooring
½” Plywood Roof Decking
Dicor Full Wrapped Exterior Roof Skin
17.5” H-Rated Cooper Tires with Aluminum Rims
Hydraulic Slide-outs on Main Level and Bed Slides
Solera Electric Awning with LED Lights
Side Turning Lights
Trail-Aire Road Armour Suspension System
3” Hung Glass Exterior Walls with High Gloss Gel Coat Exterior
Riverstone Tandem 8,000 lb. Axles/7,000 lb. Tri-Axles
32” x78” Entry Door with Friction Hinges
Dual Pane Frameless Windows
Full Docking Station
2—15,000 BTU High Performance Quiet Cool A/Cs
Painted Full Front and Rear Fiberglass Caps (N/A 37FLTH, 42FSKG, 419RD - Front caps only)
12V Powered 50 Amp Cord Reel
MORryde Step Above Entry Step at Main Entry Door
Two Dual 6V or 12V Slide-Out Battery Trays
High Visibility Chrome LED Tail Lights
2” Hitch Receiver for Bike Rack (N/A in Toy Hauler Models)
Dual 40LB LP Tanks

RiverStone Luxury Package (Mandatory)

Automatic 6-Point Hydraulic Level-Up System
Four Camera Observation System Prep
King Wi-Fi Max Router and Omni Directional Wi-Fi Antenna/Extender
Splendid “Astral” Stackable Washer and Dryer
40” LED TV in Bedroom
Stained Hardwood Cabinetry and Stiles Throughout
12V Heated Holding Tanks
Large Infiniti Light over Kitchen Island (NA on 39FSK or 42FSKG)
Fischer Paykal Dishwasher
Ceiling Fan (NA on 39RBFL)
Truma Aqua Go Comfort On-Demand Hot Water Heater
LP Generator Prep
Energy Management System
Tank Sensors Display (Grey, Black and Fresh) integrated with Firefly Readout
Tire Pressure Sensors
Additional Camp-side Awning w/Weathershield

Garage Model Standards

Triple 7000LB Axles
66” x 80” Residential 10” Memory Foam Mattress
MORryde Zero Gravity Ramp Door
110” deep, 66” wide, 84” Tall (bed up) 58” Tall (bed down) Cargo Area

Ultimate Electronics Package (Mandatory)

65” Samsung LED Smart TV in Living Room (55” TV in 37FLTH and 39RBFL)
JBL Premium Sound System with DVD Player
1500 Watt Inverter
Firefly Integrated Touch Control System
190 Watt Solar Panel with 30Amp Controller
Pre-Wire Prep for 2 Additional Solar Panels

Optional Legacy Package

Full Body Paint
Hydraulic Disc Brakes
3rd High Performance AC w/ Heat
Pump
17.5" H Rated Good Year Tires
Cordless Vacuum
Two Folding Chairs
LCI Waste Management System

Additional Options

3rd A/C (15,000BTU) with Heat Pump
Heat Pump on Bedroom A/C
5.5 Onan Marquis Gold LP Generator
Cadet Wall Mounted Electric Heater in Bedroom
Trail Air 21K Hitch
Good Year 17.5” H Rated Tires—Tandem Axle
Good Year 17.5” H Rated Tires—Triple Axle (Toy Haulers)
Four Camera System w/7” Monitor Screen---Rear, Side and Entry Door Views
Slide Room Awning Toppers with Metal Weather Shields
Two Additional 190W Solar Panels
MORryde Independent Suspension System
King Tailgater One-Pro Roof Mounted Satellite
Full Body Paint
Hydraulic Disc Brakes
40” Outside TV (NA on 42FSKG and 37FLTH)
50” Outside TV (Toy Haulers Only)
13CF Side by Side Gas/Electric Fridge with Wood Fronts (NA in FSK,42FSKG,39RKFB)
30” Stainless Steel Convection Microwave Oven
Stone Pattern Flooring
Two Folding Chairs
Queen Bed Suite IPO King Bed Suite
Carpet on Bedroom Floor IPO Vinyl
2nd Sofa IPO Desk (39RKFB, 39FSK, 42FSKG)

See us for a complete list of features and available options!

All standard features and specifications are subject to change.

All warranty info is typically reserved for new units and is subject to specific terms and conditions. See us for more details.

Due to the current environment, our features and options are subject to change due to material availability.

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National RV Detroit is not responsible for any misprints, typos, or errors found in our website pages. All prices and payments listed exclude sales tax, title, license, administrative processing, dealer prep and delivery fees. Manufacturer pictures, specifications, and features may be used in place of actual units on our lot. Please contact us @734-545-8205 for availability as our inventory changes rapidly. All calculated payments are an estimate only, do not constitute an offer of credit, and are subject to lender approval. Advertised monthly payment is based on 20% cash down, plus tax, title and registration, at 8.99% APR for 144 months on amounts under $25,000, at 8.99% APR for 180 months on amounts from $25k to $50,000, at 8.49% for 240 months on amounts from $50k to $150,000, and at 7.99% APR on amounts over $150k. Actual loan terms will vary depending on your specific credit situation. Advertised sale price is applicable only with indirect finance contract arranged by dealership.

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New 2025 Forest River RV RiverStone 421FK

421FK Floorplan

Specifications

Description

Features