Loft
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2026 Forest River Sierra 3990FL
NewStock #15669
Listing price
2026 Sierra 3990FL
Other floor plans with a similar body style, feature mix, and price range, prioritizing other manufacturers and brands.
The 3990FL puts the living room up front where it belongs, creating a natural gathering space anchored by a fireplace and a 50" smart TV while keeping the rear King bedroom genuinely private. A loft with stairs adds real sleeping space without folding anything down, and the kitchen island gives you an actual prep area rather than a cramped galley afterthought. Underneath, 7,000lb axles with anti-lock brakes, rooftop solar, and an automatic leveling system mean the infrastructure matches the interior ambition. Washer/dryer prep, solid surface countertops, and dual 15k BTU ducted A/Cs round out a rig built for extended stays, not just weekends.
Length
43 ft 6 in
Dry weight
12,439 lbs
GVWR
15,375 lbs
Sleeps
8
Many factors play into a unit's listing price and what you should pay. This guide provides a ballpark estimate, but it does not factor in your exact scenario or how different listings are equipped.
$68,299 – $79,999
This unit is ranked 4 of 14 by asking price in this group.
The listing price on this unit has changed 5 times.
See the complete price timeline and the rest of this unit's pricing insights.
Recreation USA
Myrtle Beach, SC
Compared with 8 dealers in South Carolina
FRONT LIVING AREA | KING BED | LOFT BUNK AREA | DUAL TRIP-FOLD HIDE-A-BEDS
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.
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.
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.
Other listings for this floor plan, ranked by condition, model year, distance, price, and listing quality.
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.
• 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.
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.
