Rear window
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2026 Forest River Sierra 3370RLS
NewStock #055195
Listing price
2026 Sierra 3370RLS
Other floor plans with a similar body style, feature mix, and price range, prioritizing other manufacturers and brands.
Length
36 ft 4 in
Dry weight
10,319 lbs
Sleeps
4
Slideouts
3
The 3370RLS puts the living room in the rear, anchored by a large rear window and a 50" smart TV that faces the couch, a layout that genuinely changes how the space feels day-to-day. Up front, a King bed slide anchors the bedroom, and washer/dryer prep (with an optional install) means this one is set up for longer stays. The kitchen punches above its class with a full island, solid surface countertops, a stainless undermount sink, and a hidden pantry tucked behind hinged cabinetry. Dual 15k BTU ducted A/C units, 200W of roof-mounted solar, and automatic leveling round out a package that's as ready for full-time comfort as it is for a seasonal trip.
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.
There may be room for price negotiation.
Unlock pricing insights with RV Envy Pro →$48,699 – $68,995
This unit has been on the lot longer than 120 days.
When was this unit listed?This unit ranks near the lowest priced for new units in this model year.
From the dealer's listing
Forest River Sierra fifth wheel 3370RLS highlights:
King Bed
Tri-Fold Hide-A-Bed
Ceiling Fan
Theater Seating
Free Standing Dinette
You’ll enjoy every adventure in this Sierra fifth wheel, designed for couples who love to hit the road and make the most of every getaway. This Sierra features triple slides for added space, a large kitchen island, plus a free-standing dinette in the kitchen area which makes it feel a lot like home. When outside, you can enjoy being seated under the two power awnings with an LED light strip which is great for evening entertaining or relaxing. When it's time to get cleaned up and ready for bed, you will appreciate the spacious bath with a one-piece fiberglass shower, a linen cabinet, and sink with a medicine cabinet as well. A front private bedroom with king bed slide will provide you with a great night's rest, and the large wardrobe has shelves for all your things. This model even has washer/dryer prep that will allow you to add a washer and dryer to make full-time easier than ever!
Each one of these Forest River Sierra fifth wheels are equipped with everything you need to make the most of each adventure! The underbelly armor will protect your unit's vitals from road debris and the painted two tone aerodynamic fiberglass front cap has an improved turning radius to make them easier to navigate. With an electric leveling system, you can set your unit up quick and easy then get to having fun faster than ever. The cambered powder coated frame with rust prohibitor construction allows for more duration of the fifth wheel. Each model also comes with a TV antenna with booster, 60,000BTU on demand tankless water heater**,** Goodyear Radial tires with 7,000 lb. axles, and the list goes on. The interior is just as impressive with Beachside Sundance Congoleum linoleum, recessed residential lighting, a memory foam mattress, and hidden hinged, soft close drawers and cabinets!
Lakeside RV
Anderson, SC
Sells faster than 100% of South Carolina RV dealers
Compared with 10 dealers in South Carolina
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