2026 Forest River RiverStone 39RKFB

Vehicle Photo
  • MSRP: $209,061
  • Dealer Discount: $54,075
  • Finance Incentive: $5,000
  • Sale Price: $149,986
  • As Low As: $1,003 /mo (Edit)
Stock #: 21173286
Tampa, FL
  • Available
  • New
  • Class: Fifth Wheel
  • Length: 42 ft 7in
  • Slides: 4
  • Dry Weight: 16,292
  • Sleeps: 4

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  • 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 luxury rear-kitchen fifth wheel designed for full-time RV living, offering a residential experience with a bath-and-a-half layout, four slide-outs, and premium construction materials. Built on a heavy-duty chassis with high-capacity suspension and insulation, it delivers stability on long hauls while maximizing interior space and comfort for extended stays.

The rear kitchen layout is the centerpiece, featuring expansive counter space, residential-grade appliances, and deep storage designed for serious cooking on the road. The main living area opens dramatically with opposing slides, creating a wide, open floorplan that includes theater seating, entertainment center, fireplace, and a dedicated workstation setup. This configuration supports both relaxation and remote work without sacrificing living space.

The front master suite is built for residential comfort with a walk-around king bed, large wardrobe storage, and direct access to a spacious bathroom. The additional half bath adds convenience for guests and reduces congestion in the main living area. High-end finishes, solid surface countertops, and integrated smart controls elevate the interior feel throughout the coach.

Exterior construction emphasizes durability with a fiberglass body, advanced leveling system, large pass-through storage, and multiple power awnings. Climate control and tank capacities are designed for extended-season or off-grid use, making this model well-suited for long-term travel or full-time RV living.


Key Features

  • Rear kitchen luxury fifth wheel layout
  • Bath-and-a-half floorplan
  • 4 slide-outs for expanded living space
  • Residential kitchen with large prep areas
  • 18 cu. ft. residential refrigerator (config dependent)
  • Convection microwave and multi-burner cooktop
  • Large pantry and full-height cabinetry storage
  • Theater seating and entertainment center with fireplace
  • Dedicated desk/workstation area
  • Front master suite with king bed
  • Walk-in wardrobe storage
  • Washer/dryer prep or installation (model dependent)
  • Large residential-style bathroom with spacious shower
  • Dual or triple A/C system (package dependent)
  • High-capacity freshwater, gray, and black tanks (approx. 79/80/80 gal)
  • Pass-through basement storage
  • Power awnings with LED lighting

†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.