2025 Forest River Riverstone 421FK

As Low As:
...
Listed Price:

$ 139,500

Condition
Used
Year
2025
Make
Forest River
Model
Riverstone 421FK
Length
42
Posted
Oct 12, 2026
Additional information
Fuel
N/A
Exterior Color
Multi
Interior Color
Multi
Sleeping Capacity
4
# of Air Conditioners
3
Water Capacity
79
Description
This Forest River Riverstone has recently been added to market (Sep 15th). Submit your offer today!

The 2025 Forest River Riverstone 421FK is a luxurious fifth-wheel trailer designed for comfort and style. It features a spacious interior and high-end

Step inside this beautifully appointed RV and enjoy the comfort and convenience of a residential-style interior designed for extended stays and relaxing getaways. The well-equipped kitchen features an upgraded Calcutta solid-surface countertop, large stainless-steel kitchen sinks with a residential-style faucet, an 18 cu. ft. French-door refrigerator with ice maker, a 3.7 cu. ft. oven with a four-burner range, and a 30-inch stainless-steel microwave with convection. Solid-surface sink covers and a matching solid-surface backsplash add both style and functionality.

The main living area features durable vinyl flooring, with matching vinyl flooring in the slide-outs, LED lighting throughout, day/night roller shades, and a 5,200 BTU fireplace that creates a warm and inviting atmosphere. The spacious living room includes sofa/desk slides and plenty of overhead storage cabinets for keeping your belongings organized. Hardwood dovetail drawers, residential soft-close cabinet hinges, and soft-close drawer glides provide the quality and convenience you expect from a residential-inspired interior.

The private sleeping area includes a 10-inch memory foam mattress measuring 72" x 80", with under-bed storage for clothing, bedding, and personal belongings. The bathroom features an oval porcelain toilet with bidet and convenient foot-flush operation.

Additional comfort and convenience features include a powerful 40,000 BTU furnace, cordless vacuum, and thoughtful storage throughout. From the upgraded kitchen finishes to the residential-style cabinetry and comfortable living space, this RV combines functionality, quality, and home-like comfort--making it an excellent choice for weekend adventures, extended travel, or full-time RV living.

Built for comfort, durability, and dependable performance, this RV features a premium construction package designed for extended travel and all-season use. Batten insulation throughout the sidewalls, slide-outs, ceiling, and floors helps provide excellent temperature control, while the -inch plywood roof decking and impact-guard roof add strength and protection.

The exterior features 3-inch hung-glass walls with a high-gloss gel coat finish, along with painted fiberglass front and rear caps for a sleek, durable appearance. Dual-pane square frameless windows provide an attractive look while helping improve insulation and comfort.

The RV rides on 17.5-inch H-rated tires with aluminum rims, supported by a CURT TCS suspension system and tandem 8,000-lb. axles or 7,000-lb. tri-axles, depending on the model. Hydraulic slide-outs on the main level and bed slides provide generous living space, while composite slide-out floors add durability. An electric awning with integrated LED lighting extends the usable outdoor living area, and side turning lights, high-visibility chrome LED tail lights, and a 32" x 78" entry door with friction hinges provide added convenience and visibility.

For outdoor convenience, the RV includes a 12V heated full docking station, electric dump valves, a water manifold system, dual 40-lb. LP tanks, and a 12V-powered 50-amp cord reel. The MORryde entry step and Safe-T-Rail make entering and exiting easier and more secure. Two dual 6V or 12V slide-out battery trays provide flexible battery storage, while the 2-inch hitch receiver offers a convenient option for carrying a bike rack with a 300-lb. rating (not available on toy hauler models).

Two 15,000 BTU high-performance Quiet Cool air conditioners and one heat pump handle climate control, providing powerful heating and cooling. Additional exterior details include riveted skirt metal, entry door silk screening, and a durable overall construction package engineered for comfort and long-term use.

With its heavy-duty running gear, insulated construction, premium exterior materials, and thoughtful campground conveniences, this RV is ready for everything from weekend adventures to extended road trips.

Would make a great Park Model.

While we will always attempt to provide you with a TRUE representation of every RV we market, during any purchase from Pop you will be encouraged to schedule an inspection from an independent, accredited inspector and every purchase WILL ALWAYS BE subject to your satisfaction with the results from your independent inspection and your own personal test drive.

Condition:
The seller states that all systems operate as designed. This unit has seen very little use. The interior and exterior are in excellent shape.

Of course, we always recommend that any buyer inspect the unit or have it independently surveyed to confirm its condition before purchase.
Additional Features
Owners: 1
Non-Smoking
Pet-Free
Extended Warranty Available
Sleeps: 4
Air Conditioning: 15,000 BTU
Fresh Water: 79 gal
Waste Water: 40 gal
Gray Water: 120 gal
Propane: 40 lbs
Generator: Onan 5.5kW
King Bed
Washer/Dryer Hookup
Tire Age: 24 yrs
Dining Features: Cabinets, Dishwasher, Kitchen Island, Kitchen Sink: Double, Microwave/convection Oven, Oven, Refrigerator/freezer, Stove
Entertainment Features: Bluetooth/aux., Exterior TV, Interior Lighting, Stereo System, TV
Living Features: Air Conditioning, Bathroom Sink, Bed: King, Ceiling Fan, Ceiling Vents, Clothes Dryer, Clothes Washer, Leather Furniture, Shower, Skylight, Slide-out, Sofa Sleeper, Storage, Toilet, Vanity, Water Heater, Windows- Day Night Shades
Mechanical Systems: 110 Lighting, 110 Outlets, AC Electrical Power, Batteries - House, Battery Charger - Solar, Braking System, City Water Hook Up, Generator, Inverter, Power Cord, Tire Date Code
Outside Features: Awning, Entry Steps - Pull Out, Exterior Storage, Leveling Jacks, Pass-through Storage
Safety Equipment: LPG Leak Detector, Smoke Detector
Location
City
Tucson
State
Arizona
ZIP code
85735
Expand Map
  • Report a Bug or Bad Listing   road-sign-warning
  • Report Listing road-sign-warning Cancel Report remove-circle
  • 4 Views
* DISCLAIMER: Estimated payments are for informational purposes only. All estimates are subject to credit approval. These estimates do not include tax, title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. They do not represent a financing offer or a guarantee of credit.
Search for a city or select popular from the list
Select a label or click "Other" to send comments
Loading...
Are you sure you want to cancel your report?
No
Click on the image to refresh the captcha.