Rear window
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2026 Forest River Sierra 3370RLS
NewStock #R055500
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 for 31 to 60 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
Enjoy residential-style comfort in the Forest River Sierra 3370RLS fifth wheel at Royal RV Center in Middlebury, Indiana. This triple-slide rear-living floorplan combines a private king bedroom, theater seating, tri-fold hide-a-bed, kitchen island, and free-standing dinette for comfortable weekend trips and extended campground stays.
Triple slide-outs
Rear living floorplan
Theater seating
Tri-fold hide-a-bed
Ceiling fan
Large kitchen island
Free-standing dinette
Private king bedroom
King bed slide
Large wardrobe with shelves
Washer/dryer prep
One-piece fiberglass shower
Dual power awnings with LED lighting
Electric leveling system
60,000 BTU tankless water heater
Triple slides expand the interior, creating an open space for relaxing and entertaining. Theater seating provides a comfortable place to unwind, while the tri-fold hide-a-bed offers additional seating during the day and sleeping space for overnight guests.
A ceiling fan helps circulate air throughout the living area.
A large kitchen island provides valuable countertop space for preparing and serving meals. The free-standing dinette creates a dedicated dining area for meals, games, or planning the next day's activities.
Hidden-hinge soft-close drawers and cabinets, recessed lighting, and Beachside Sundance Congoleum linoleum contribute to the residential-style interior.
The front bedroom features a king bed slide-out for a comfortable private retreat. A large wardrobe with shelving provides dedicated clothing storage, while washer/dryer prep gives you the option to add laundry appliances for longer stays.
Royal RV Center
Middlebury, IN
Sells faster than 25% of Indiana RV dealers
Compared with 20 dealers in Indiana
Other listings for this floor plan, ranked by condition, model year, distance, price, and listing quality.
The bathroom includes a one-piece fiberglass shower, linen cabinet, sink, and medicine cabinet, providing convenient storage for towels, toiletries, and everyday essentials.
Two power awnings with LED lighting create covered outdoor living space around the campsite. An electric leveling system helps simplify setup.
Additional features include Underbelly Armor, a painted two-tone aerodynamic fiberglass front cap, a cambered powder-coated frame with rust prohibitor, Goodyear radial tires with 7,000-lb. axles, and a TV antenna with booster.
A 60,000 BTU on-demand tankless water heater adds everyday convenience, while a memory foam mattress enhances the bedroom setup.
If you're searching for a Forest River Sierra 3370RLS rear-living fifth wheel for sale in Indiana, Michigan, or Ohio, explore this spacious couples-focused floorplan at Royal RV Center.
Visit Royal RV Center in Middlebury, IN, proudly serving Indiana, Michigan, Ohio, and beyond.
