Loft
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2025 Forest River Sierra 3990FL
NewStock #tj054701
Listing price
2025 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
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The listing price on this unit has changed 2 times.
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Colman's RV
Springfield, IL
Sells faster than 100% of Illinois RV dealers
Compared with 9 dealers in Illinois
Bring the feel of a separate living room to your next getaway. This new 2026 Forest River Sierra 3990FL has a raised front lounge with sofas, paired lounge seats, a fitted TV and fireplace—a welcoming place to gather after a day outside.
The kitchen island, refrigerator, microwave and range support meals at your own pace, with a window-side dining table nearby. At the rear, the bedroom and upper sleeping area provide separate places to settle in.
The bathroom includes a shower, toilet and sink, and cabinets throughout give you places for the things that make a trip comfortable. Come explore this specific Sierra. Call Colman’s RV at 217-793-7300 and ask about stock tj054701.
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