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new Fifth Wheel · Stock 15669
2026 Forest River RV Sierra 3990FL
Myrtle Beach, SC
Plus tax, tags and title. Confirm availability and final pricing with a specialist.
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Specifications
- Sleeps
- 8
- Length
- 43 ft 6 in
- Hitch Weight
- 2825 lbs
- Dry Weight
- 12439 lbs
- Fresh Water Capacity
- 50 gals
Highlights
- Front Living Area
- King Bed
- Loft Bunk Area
- Dual Trip-Fold Hide-A-Beds
About this camper
Searching for the perfect residential-style fifth wheel that handles large families with ease? 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.