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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
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New 2026 Forest River Sierra fifth wheel 3990FL
- FTC Compliant Price: $73,479
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44ft long
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12,439 lbs
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Sleeps 8
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5 slides
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Washer/Dryer PrepFront Living
3990FL Floorplan
Specifications
| Sleeps | 8 | Slides | 5 |
| Length | 43 ft 6 in | Ext Width | 8 ft |
| Ext Height | 13 ft 4 in | Int Height | 7 ft |
| Hitch Weight | 2825 lbs | GVWR | 15375 lbs |
| Dry Weight | 12439 lbs | Cargo Capacity | 2936 lbs |
| Fresh Water Capacity | 50 gals | Grey Water Capacity | 80 gals |
| Black Water Capacity | 50 gals | Furnace BTU | 40000 btu |
| Available Beds | King | Refrigerator Type | 12V |
| Refrigerator Size | 16 cu ft | Cooktop Burners | 3 |
| Number of Awnings | 1 | Axle Weight | 7000 lbs |
| LP Tank Capacity | 30 lbs | Water Heater Type | On Demand Tankless |
| AC BTU | 30000 btu | TV Info | LR 50" Flat Screen Smart TV |
| Awning Info | 21' Electric w/LED Light Strip | Axle Count | 2 |
| Washer/Dryer Available | Yes | Number of LP Tanks | 2 |
| Shower Type | Standard | Electrical Service | 50 amp |
| VIN | 4X4FSES25TJ054936 |
Description
* #1 TRUSTED FAMILY-OWNED DEALER IN THE CAROLINAS | #1 SIERRA DEALER IN THE SOUTHEAST *
New 2026 Forest River Sierra 3990FL
FRONT LIVING AREA | KING BED | LOFT BUNK AREA | DUAL TRIP-FOLD HIDE-A-BEDS
Why Recreation USA is the #1 Authority
Searching for the perfect residential-style fifth wheel that handles large families with ease? The 2026 Forest River Sierra 3990FL is available right here at Recreation USA in South Myrtle Beach, SC. As a local family-owned dealership, we do business differently. We don't have the massive overhead of big-box corporate stores, and we don't pass those costs on to you. When you buy from us, you get our lowest price upfront with absolutely no hidden fees in the backend—no surprise freight, no prep fees, just honest, transparent pricing.
Factory-Ordered Premium Options
We have custom-ordered this unit with elite packages to ensure high-end residential comfort and convenience:
- Summit Package: Premium performance and comfort upgrades throughout.
- Chef’s Kitchen Package: Enhanced kitchen utility for gourmet meal prep on the road.
- Interior: Modern, high-durability Switchback interior color scheme.
3990FL Highlights: Family Luxury
- FRONT LIVING AREA: Dual slide front living room with 50" TV, fireplace, theater seating, and two tri-fold hide-a-beds for added sleeping.
- MASTER SUITE: Features a slide-out king bed, memory foam mattress, and a spacious bath with a one-piece fiberglass shower.
- LOFT AREA: Rear loft above the bedroom/bathroom featuring two 44" x 74" bunk mats and dedicated storage.
- Gourmet Kitchen: Center island with large sink, free-standing dinette, and 12V residential refrigerator.
- Quality Construction: Underbelly Armor, painted aerodynamic two-tone fiberglass front cap, and cambered powder-coated frame.
- Technical Highlights: Electric leveling system, 60,000 BTU on-demand tankless water heater, and 7,000 lb. axles with Goodyear Radial tires.
FTC-Compliant Pricing Standard
Most big-box corporate RV dealers advertise a low hook-price online, only to hit you with $2,000 to $4,000 in surprise fees when you walk into the finance office. We have declared war on those corporate games.
The Federal Trade Commission (FTC) explicitly deems these hidden, surprise dealer fees to be deceptive and illegal. Corporate bait-and-switch tactics violate federal consumer protection standards, which is why our pricing remains 100% upfront, transparent, and honest.
The only items NOT included in our advertised selling price are standard, non-negotiable governmental fees (Tax, Tag, and Registration). Every single dealership prep fee is fully absorbed into the price.
Honest Pricing vs. Corporate Chain Stores
• Freight, Factory Prep, Detail & Tech Walkthrough: 100% INCLUDED (Typical Chain Stores: Extra $1,900 - $3,800)
• Filled Propane Tanks: INCLUDED. Fully loaded propane tanks are ready to go on day one. (Typical Chain Stores: Extra $100 - $200)
• Genuine Interstate Deep-Cycle Battery: INCLUDED. Heavy-duty American reliability standard. (Typical Chain Stores: Extra or cheap generic junk)
• Dealer Document Fees: $0.00 ZERO (Typical Chain Stores: Extra $499 - $999)
All of this is completely included in our selling price. We do not play corporate trick games, and we will absolutely NOT charge you an extra $1,995 for a mandatory "Let's Go Camping Package" like the big chain stores stick on your bill at signing.
Recreation USA is proud to stand as one of the few remaining independent, family-owned RV dealerships in the country. We don't answer to Wall Street investors or corporate boards—we answer directly to you. That independent freedom is exactly how we are able to throw out the industry rulebook, absorb factory prep charges, and offer completely transparent, honest pricing on every single fifth wheel we sell.
Seamless Nationwide Delivery Services
We offer premium, white glove service straight to your home, driveway, or campground anywhere in the United States. Our in-house logistics team is fully licensed, insured, and tracked. Call or message us right now for a fast, hassle-free out-of-the-door delivery quote from the Carolinas' highest-rated upfront dealer.
Features
Standard Features (2026)
Exterior Features
- Automatic Electric Level-Up System
- 2" Towing and Accessory Hitch (Where Available)
- 7,000lb axles with Anti-lock Braking System
- Goodyear Radial Tires w/ anti-lock brakes
- Lippert auto adjust brakes
- Rich Solar 200W roof mounted solar panel with controller and battery
- Quad MORryde® step above with strut (Where Available)
- Color matched high gloss gel coated colored exterior fiberglass
- Painted two tone aerodynamic fiberglass front cap with improved turning radius
- Underbelly Armor
- Tire Pressure Monitoring System
- Spare tire
- Large, tinted windows with 80/20 UV prohibitor
- Electric awning with LED light strip
- Prepped for Lippert On-The-Go Ladder
- Power front jacks with spring loaded pins
- Automotive-style fender skirts
- Hitch light
- Porch light with interior switch
- 30 lb. double LP tanks with auto change over
- Rain gutters with extra long drip spouts (Prevents black streaking)
- Insulated heavy duty slam lock baggage doors
- Exterior foldable grab handle
- Unobstructed pass through storage area
- Upgraded aluminum rims
- Oversized friction hinge entry door with extended latch (Main Entry)
- Exterior LP Quick Connect
Interior Features
- Solid Surface Kitchen Counter tops
- Fiberglass one-piece shower
- Washer and Dryer Prep
- 7’ slide-out height (Main Slides)
- Stainless steel kitchen package
- Beachside Sundance Congoleum linoleum
- Hidden hinged, soft close drawers and cabinets
- Full extension ball bearing drawer guides
- Stainless steel under mounted kitchen sink
- Trash receptacle in kitchen
- Decorative backsplash
- Two color coordinated interiors
- LED lighting throughout
- Recessed residential lighting
- Accent lighting over dinette
- Extra large, panoramic picture windows throughout
- Vented side windows in slide-outs
- TV antenna with booster
- Solid wood drawer fronts with birch sides
- Solid wood, square inset cabinet doors, painted or wood grain
- Bedroom slide-out fascia
- Memory foam mattress
- Teddy Bear® bunk mats
- 50" flatscreen smart TV (65” 3900HBLR)
- JBL Aura Cube FM/Bluetooth media center
- Designer window treatment
- Ceiling fan
- Tri-fold hide-a-bed sofa
- Quilted bedspread
- Prepped for inverter
Appliances/Systems
- Dual ducted 15k BTU Air Conditioners, prepped for 3rd 15k BTU A/C
- AIRDIRECT® Air Vents for improved efficiency
- 16 cu. ft. 12V refrigerator
- 60,000BTU On Demand Tankless Water Heater
- 40,000BTU furnace
- Heated Holding Tanks (12V)
- Floor ducted 40,000BTU furnace
- 30" OTR stainless steel microwave
- Chef collection 3 burner / 24" oven with drawers
- Interior monitor panel for holding tanks
- Satellite and cable hookup with RG-6 cable for high quality picture
- Porcelain foot flush toilet(s)
- 65 Amp converter
- Power fan in Kitchen and Bathroom(s)
Construction
- 5/8" tongue and groove DryMax® OSB floor decking
- 2 x 3 floor joists, 12" on center
- Laminated sidewalls
- 3/8" roof decking (Full walk-on roof)
- Cambered powder coated frame with rust prohibitor
- Underbelly armor
- 5" truss roof rafters
- R-10, 2" sidewall construction
- Laminated slide-out walls
For Your Safety
- Smoke alarm
- Fire extinguisher
- Breakaway switch (Battery hook-up required)
- Dead-bolt lock on entry door
- LP/CO2 gas detector
- Fire escape windows
Popular Options
- Two chairs in place of ottoman bench
- Cordless vacuum
- Slide room awnings (N/A dinette slides)
- Washer and Dryer (Standard on 3800RK & 3900HBLR)
- Dual pane windows (N/A 3900HBLR 84” Window)
- 3rd A/C power saver direct dump system w/ wall thermostat
Please 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.
Save your favorite Rvs as you browse. Begin with this one!
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Rodney from Newton Grove, NC2026 cfmoto highland xl
Great communication, did exactly what they said they would. Price was right!! -
Amy from Cheraw, SCTHE BEST RV DEALER
Patrick was a great pleasure to deal with! He kept in contact with me, gave us private time to look at our RV and discuss things and was very very personable! Jonathan went above and beyond for us and your kindness is greatly appreciated!! I HIGHLY HIGHLY RECOMMEND RECREATION USA if you are looking -
Susan from Quinby, SCHampton
I absolutely love my Hampton destination trailer. Also, I’m truly grateful that I purchased the extended warranty. I had a small problem with a water pump. They came out. The service tech was knowledgeable. He did a great job on the repair. It was done fast and it was all covered by my warranty. I
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Recreation USA is not responsible for any misprints, typos, or errors found in our website pages. Any price listed excludes sales tax, registration tags, and delivery fees. Manufacturer pictures, specifications, and features may be used in place of actual units on our lot. Please contact us @843-215-1800 for availability as our inventory changes rapidly. All calculated payments are an estimate only and do not constitute a commitment that financing or a specific interest rate or term is available.
Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. Where an image has a stock image indicator, please confirm specific unit details with your dealer representative.
