2026 Forest River RiverStone 39RKFB

Vehicle Photo
  • MSRP: $208,073
  • Dealer Discount: $53,087
  • Finance Incentive: $5,000
  • Sale Price: $149,986
  • As Low As: $1,003 /mo (Edit)
Stock #: 21171504
Tampa, FL
  • Available
  • New
  • Class: Fifth Wheel
  • Length: 42 ft 7in
  • Slides: 4
  • Dry Weight: 16,292
  • Sleeps: 4

Get Internet Price

I opt in to receive email and texting communication from Lazydays RV.

Thank you for your interest, we will be in touch shortly.

There was an error submitting your form. Please call us at 800-306-4011 and we can help you over the phone.

Give us a call! 813-246-4999
  • Bath and a Half
  • Front Bath
  • Rear Kitchen
Floorplan
  • Available Beds King
  • Exterior Height 13 ft 4in
  • Exterior Width 8 ft 6in
  • Pin Weight 3,084 lbs
  • Gross Weight 19,084 lbs
  • Dry Weight 16,292 lbs
  • Tire Size 17.5""
  • Axle Count 2
  • Fresh Water Capacity 79 gal
  • Grey Water Capacity 80 gal
  • Black Water Capacity 80 gal
  • Furnace BTU 40,000
  • Refrigerator Type French Door with Ice Maker
  • Refrigerator Size 18
  • Cooktop Burners 4
  • Shower Type Standard
  • Number of Awnings 2
  • Electrical Service 50 amps
  • Washer/Dryer Available Yes
  • TV Info LR 65"" Samsung LED Smart TV, BR 40"" Smart LED TV

The 2026 Forest River RiverStone 39RKFB is a high-end luxury fifth wheel built for full-time RV living, featuring a rear kitchen layout, bath-and-a-half configuration, and four slide-outs that create an expansive residential-style interior. Designed on a heavy-duty chassis with premium insulation and high-capacity systems, it delivers maximum space, storage, and residential comfort for extended travel or long-term stays.

Inside, the rear kitchen is the focal point, offering wraparound counter space, residential appliances, and extensive cabinetry for true home-style cooking on the road. The main living area features opposing slides that open the coach significantly, along with theater seating, entertainment center, and a dedicated workspace area depending on configuration. The bath-and-a-half layout adds convenience for guests while keeping the master suite private and fully equipped with wardrobe storage and washer/dryer prep or installation.

The front master suite provides a true residential sleeping experience with a king bed, full wardrobe storage, and direct access to the primary bathroom. Throughout the coach, premium materials, integrated smart controls, and high-end finishes elevate the overall feel. Large holding tanks, multiple air conditioners, and upgraded insulation support extended-season camping and off-grid capability when needed.

Exterior features emphasize durability and convenience with full pass-through storage, power awnings, advanced leveling systems, and upgraded suspension designed for stability during long hauls. The RiverStone line is positioned as Forest River’s premium luxury fifth wheel segment, focusing on residential comfort and long-term livability.


Key Features

  • Rear kitchen luxury fifth wheel layout
  • Bath-and-a-half floorplan
  • 4 slide-outs for maximum interior space
  • Residential kitchen with full-size appliances
  • Large pantry and extensive cabinetry storage
  • Theater seating and entertainment center
  • Dedicated desk/workspace area (select configurations)
  • Private front master bedroom with king bed
  • Washer/dryer prep or installed unit (floorplan dependent)
  • Dual or triple air conditioning system (package dependent)
  • Large-capacity freshwater, gray, and black tanks
  • Full pass-through exterior storage compartments
  • Power awnings with LED lighting
  • Hydraulic or electric leveling system (package dependent)
  • Heavy-duty chassis with upgraded suspension system

†Lazydays strives to ensure the accuracy of the information provided on this website. However, actual products, programs and services may differ materially from those on this site. Lazydays is not responsible for errors made in stated pricing or specifications. Specifications and availability subject to change without notice. Price, length, weight, or any other specifications cannot be relied upon. Buyers should verify and confirm all claims made on the website. Sale price includes all manufacturer discounts and rebates. All prices listed on this site exclude tax, tags and title fees. Applicable government fees, state taxes, dealer fees and emissions testing charges will be added to comply with state vehicle codes. Freight and prep costs are additional and vary by state. Contact Lazydays for complete details.

*90 Days – Payments can be deferred for 90 days with approved credit. Interest accrues from contract date. Financing terms subject to lender approval. Not valid with other offers. Actual products, programs and services may differ materially from those on this site. Lazydays is not responsible for errors made in stated pricing. Specifications and availability subject to change without notice. Document fees vary by location. See dealership for complete details.

**Lazydays believes the specifications on this site supplied by the manufacturer to be correct at the time posted. However, specifications, standard equipment, model availability, options, fabrics, and colors are subject to change without notice. Some equipment may be unavailable when a vehicle is built. Some vehicles are pictured with options, which may be available at extra cost or may not be available on some models. You should verify the equipment that is on all vehicles. If a new vehicle shown on this website is subject to an open safety recall, Lazydays cannot deliver the vehicle to you until the recall repair is completed. This is a requirement of federal law.

***The advertised discount contains a $5,000 finance incentive. Finance Incentive applies if financing for your RV purchase is obtained with assistance by Lazydays and placed with a third party lender. Terms and Conditions may apply. Contact our finance department for further details.

****Margaritaville offer valid for a limited time only at Lazydays RV of Tampa. Customers who purchase a new RV or complete a qualified service appointment (appointment must be booked and customer must show for the appointment) are eligible to receive a complimentary 3-day, 2-night stay at Camp Margaritaville RV Resort of Auburndale. Offer valid while supplies last. Promotion is non-transferable, has no cash value, and cannot be combined with other offers or promotions. Limit one promotional stay per customer, per transaction. Resort stay subject to availability and blackout dates may apply. Resort reservation must be made within 30 days of RV purchase or completed service appointment. Valid for Florida residents and legal U.S. residents only, 18 years or older. Additional terms and conditions may apply. Lazydays RV of Tampa reserves the right to modify or cancel this promotion at any time without notice. Void where prohibited by law.