2026 Forest River Sierra 3370RLS

Forest River Sierra 3370RLS Fifth Wheel for Sale at Royal RV Center in Middlebury, IN

Enjoy residential comfort wherever your travels take you in the Forest River Sierra 3370RLS fifth wheel. Available at Royal RV Center in Middlebury, Indiana, this spacious triple-slide fifth wheel combines a king-bed master suite, rear living area, kitchen island, theater seating, and free-standing dinette. It's a comfortable choice for couples planning weekend escapes, extended vacations, or longer stays on the road.

Forest River Sierra 3370RLS Highlights

• Triple slide-outs
• King bed slide
• Large wardrobe with shelves
• Washer/dryer prep
• Tri-fold hide-a-bed
• Theater seating
• Ceiling fan
• Large kitchen island
• Free-standing dinette
• One-piece fiberglass shower
• Two power awnings with LED lighting
• Electric leveling system
• On-demand tankless water heater
• Goodyear radial tires
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Spacious Rear Living Area

Triple slides open up the interior and give the Sierra 3370RLS a residential feel. The rear living area provides comfortable theater seating for kicking back after a day outdoors, while the tri-fold hide-a-bed adds seating during the day and extra sleeping space when guests stay overnight.

A ceiling fan helps circulate air throughout the living space for added comfort.

Residential Kitchen With Island

The large kitchen island provides valuable countertop space for preparing meals, serving snacks, and gathering with friends. Its central location also helps create the open residential-style layout many extended-stay RVers appreciate.

Instead of a traditional booth, the free-standing dinette gives you a comfortable dining area that feels more like home and provides a dedicated place for meals, games, or planning your next destination.

Private King-Bed Master Suite

The front private bedroom creates a relaxing retreat with a king bed slide-out, giving you a spacious place to recharge each night.

A large wardrobe with shelving provides room to organize clothing and personal belongings. Washer/dryer prep also gives you the option to add laundry appliances—an especially useful feature for longer trips and extended RV living.

Spacious Full Bathroom

The bathroom includes a one-piece fiberglass shower for comfortable everyday use. A linen cabinet keeps towels and bathroom supplies close at hand, while the sink and medicine cabinet provide additional storage for toiletries and personal items.

Having your own spacious bathroom means less dependence on campground facilities wherever your adventures take you.

Two Power Awnings for Outdoor Living

Extend your campsite beyond the walls of the RV with two power awnings. Integrated LED lighting provides convenient illumination for evenings outside, whether you're entertaining friends, enjoying dinner, or simply relaxing at the end of the day.

Convenient Campsite Setup

An electric leveling system helps make setting up at the campground faster and easier. Underbelly Armor helps protect vital components from road debris, while the painted two-tone aerodynamic fiberglass front cap features an improved turning radius for easier maneuvering.

The Sierra also features a cambered powder-coated frame with rust prohibitor construction and Goodyear radial tires with 7,000-lb. axles.

Residential Comfort for Longer Adventures

Inside, you'll find thoughtful touches such as recessed residential lighting, Beachside Sundance Congoleum linoleum, a memory foam mattress, and hidden-hinge soft-close drawers and cabinets.

A 60,000 BTU on-demand tankless water heater provides convenient hot water, while a TV antenna with booster adds another useful feature for campground living.

If you're searching for a Forest River Sierra 3370RLS fifth wheel for sale in Indiana, Michigan, or Ohio, visit Royal RV Center in Middlebury, IN. With triple slides, a king bedroom, theater seating, residential kitchen island, free-standing dinette, and abundant storage, the Sierra 3370RLS is designed to make extended travel feel more like home.

Visit Royal RV Center in Middlebury, IN, proudly serving Indiana, Michigan, Ohio, and beyond.

• Front Bedroom
• Kitchen Island
• Rear Living Area