Make the most out of every adventure with a Forest River Sierra fifth wheel! With unique models like bunkhouses, front living areas, and mid-bunk/office rooms, you can be sure to find one that best fits your needs.
The electric leveling system included makes setting up a breeze allowing you to start having fun sooner. The underbelly armor will protect your unit's vitals from road debris and the painted two tone aerodynamic fiberglass front cap with improved turning radius will make it easier to maneuver. With the standard Summit Package, you'll enjoy a BoonDocker solar system, an on demand water heater, two 15,000 BTU A/C units, and more amenities to make camping hassle-free. And the cook in your group will love the Chef's Kitchen Package, complete with solid surface countertops, designer backsplash, and a spacious 12V stainless refrigerator to name a few features.
Come see how the Forest River Sierra fifth wheels have the perfect balance of size, space, features, and luxury!
Forest River Sierra fifth wheel 3800RK highlights: Four Slides Theater Seating ... more about Sierra 3800RK
| Sleeps | 4 |
| Slides | 4 |
| Length | 44 ft 1 in |
| Ext Width | 8 ft |
| Ext Height | 13 ft 4 in |
| Hitch Weight | 2405 lbs |
| GVWR | 15500 lbs |
| Dry Weight | 12849 lbs |
| Cargo Capacity | 2651 lbs |
| Fresh Water Capacity | 50 gals |
| Grey Water Capacity | 100 gals |
| Black Water Capacity | 50 gals |
| Tire Size | 16" |
| Furnace BTU | 40000 btu |
| Available Beds | King |
| Refrigerator Type | 12V |
| Cooktop Burners | 3 |
| Number of Awnings | 2 |
| Axle Weight | 7000 lbs |
| LP Tank Capacity | 30 lbs |
| Water Heater Capacity | 60000 gal |
| Water Heater Type | On Demand Tankless |
| AC BTU | 30000 btu |
| TV Info | LR 50" Flat Screen TV |
| Awning Info | 13' & 16' Electric w/LED Light Strip |
| Washer/Dryer Available | Yes |
| Number of LP Tanks | 2 |
| Shower Type | Shower w/Seat |
Forest River Sierra fifth wheel 3370RLS highlights: King Bed Tri-Fold Hide-A-Bed ... more about Sierra 3370RLS
Have a question about this floorplan? Contact Us
| Sleeps | 4 |
| Slides | 3 |
| Length | 36 ft 4 in |
| Ext Width | 8 ft |
| Ext Height | 13 ft 4 in |
| Hitch Weight | 1560 lbs |
| GVWR | 13560 lbs |
| Dry Weight | 10319 lbs |
| Cargo Capacity | 3241 lbs |
| Fresh Water Capacity | 50 gals |
| Grey Water Capacity | 50 gals |
| Black Water Capacity | 50 gals |
| Tire Size | 16" |
| Furnace BTU | 40000 btu |
| Available Beds | King |
| Refrigerator Type | 12V |
| Refrigerator Size | 17 cu ft |
| Cooktop Burners | 3 |
| Number of Awnings | 2 |
| Axle Weight | 7000 lbs |
| LP Tank Capacity | 30 lbs. |
| Water Heater Capacity | 60 gal |
| Water Heater Type | On Demand Tankless |
| AC BTU | 30000 btu |
| TV Info | LR 50" TV |
| Awning Info | 10' 8" and 16' Electric w/LED Light Strip |
| Axle Count | 2 |
| Washer/Dryer Available | Yes |
| Number of LP Tanks | 2 |
| Shower Type | Shower w/Seat |
Forest River Sierra fifth wheel 3550BH highlights: Kitchen Island Shower with a ... more about Sierra 3550BH
Have a question about this floorplan? Contact Us
| Sleeps | 9 |
| Slides | 3 |
| Length | 43 ft 6 in |
| Ext Width | 8 ft |
| Ext Height | 13 ft 4 in |
| Hitch Weight | 2380 lbs |
| GVWR | 15500 lbs |
| Dry Weight | 12044 lbs |
| Cargo Capacity | 3456 lbs |
| Fresh Water Capacity | 50 gals |
| Grey Water Capacity | 132 gals |
| Black Water Capacity | 100 gals |
| Tire Size | 16" |
| Furnace BTU | 40000 btu |
| Available Beds | King, RV Queen |
| Refrigerator Type | 12V |
| Refrigerator Size | 17 cu ft |
| Cooktop Burners | 3 |
| Number of Awnings | 2 |
| Axle Weight | 7000 lbs |
| LP Tank Capacity | 30 lbs |
| Water Heater Capacity | 60000 gal |
| Water Heater Type | On Demand |
| AC BTU | 30000 btu |
| TV Info | LR 50" TV |
| Awning Info | 12' and 21' Electric w/LED Light Strip |
| Axle Count | 2 |
| Number of LP Tanks | 2 |
| Shower Type | Shower w/Seat |
Forest River Sierra fifth wheel 3880BH highlights: King bed Bunk beds Dual ... more about Sierra 3880BH
Have a question about this floorplan? Contact Us
| Sleeps | 6 |
| Slides | 4 |
| Length | 42 ft 2 in |
| Ext Width | 8 ft |
| Ext Height | 13 ft 4 in |
| Hitch Weight | 2260 lbs |
| GVWR | 16260 lbs |
| Dry Weight | 13599 lbs |
| Cargo Capacity | 2661 lbs |
| Fresh Water Capacity | 50 gals |
| Grey Water Capacity | 156 gals |
| Black Water Capacity | 52 gals |
| Tire Size | 16" |
| Furnace BTU | 40000 btu |
| Number Of Bunks | 1 |
| Available Beds | King |
| Refrigerator Type | 12V |
| Cooktop Burners | 3 |
| Number of Awnings | 2 |
| LP Tank Capacity | 30 lbs |
| Water Heater Capacity | 60000 gal |
| Water Heater Type | On Demand Tankless |
| AC BTU | 30000 btu |
| TV Info | LR 50" Flat Screen TV |
| Awning Info | 10' 8" and 16' Electric w/LED Light Strip |
| Axle Count | 2 |
| Washer/Dryer Available | Yes |
| Number of LP Tanks | 2 |
| Shower Type | Shower w/Seat |
Forest River Sierra fifth wheel 3900HBLR highlights: Three Slides Entertainment ... more about Sierra 3900HBLR
Have a question about this floorplan? Contact Us
| Sleeps | 3 |
| Slides | 3 |
| Length | 42 ft 9 in |
| Ext Width | 8 ft |
| Ext Height | 13 ft 4 in |
| Hitch Weight | 2085 lbs |
| GVWR | 13085 lbs |
| Dry Weight | 13284 lbs |
| Cargo Capacity | 2801 lbs |
| Fresh Water Capacity | 50 gals |
| Grey Water Capacity | 136 gals |
| Black Water Capacity | 104 gals |
| Tire Size | 16" |
| Furnace BTU | 40000 btu |
| Available Beds | King |
| Refrigerator Type | 12V |
| Cooktop Burners | 3 |
| Number of Awnings | 2 |
| Axle Weight | 7000 lbs |
| LP Tank Capacity | 30 lbs |
| Water Heater Capacity | 60000 gal |
| Water Heater Type | On Demand Tankless |
| AC BTU | 30000 btu |
| TV Info | LR 50" Flat Screen TV |
| Awning Info | 12' & 18' Electric w/LED Light Strip |
| Washer/Dryer Available | Yes |
| Number of LP Tanks | 2 |
| Shower Type | Shower w/Seat |
Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed ... more about Sierra 3990FL
Have a question about this floorplan? Contact Us
| Sleeps | 8 |
| Slides | 5 |
| Length | 43 ft 6 in |
| Ext Width | 8 ft |
| Ext Height | 13 ft 4 in |
| Hitch Weight | 2825 lbs |
| GVWR | 15375 lbs |
| Dry Weight | 12439 lbs |
| Cargo Capacity | 2936 lbs |
| Fresh Water Capacity | 50 gals |
| Grey Water Capacity | 80 gals |
| Black Water Capacity | 50 gals |
| Tire Size | 16" |
| Furnace BTU | 40000 btu |
| Available Beds | King |
| Refrigerator Type | 12V |
| Refrigerator Size | 17 cu ft |
| Cooktop Burners | 3 |
| Number of Awnings | 1 |
| LP Tank Capacity | 30 lbs |
| Water Heater Capacity | 60000 gal |
| Water Heater Type | On Demand Tankless |
| AC BTU | 30000 btu |
| TV Info | LR 50" Flat Screen TV |
| Awning Info | 20' Electric w/LED Light Strip |
| Axle Count | 2 |
| Washer/Dryer Available | Yes |
| Number of LP Tanks | 2 |
| Shower Type | Shower w/Seat |
Forest River Sierra fifth wheel 4002FB highlights: Two Bedrooms Two Full ... more about Sierra 4002FB
Have a question about this floorplan? Contact Us
| Sleeps | 6 |
| Slides | 4 |
| Length | 43 ft 5 in |
| Ext Width | 8 ft |
| Ext Height | 14 ft 4 in |
| Hitch Weight | 2340 lbs |
| GVWR | 15500 lbs |
| Dry Weight | 12889 lbs |
| Cargo Capacity | 2611 lbs |
| Fresh Water Capacity | 50 gals |
| Grey Water Capacity | 100 gals |
| Black Water Capacity | 100 gals |
| Tire Size | 16" |
| Furnace BTU | 40000 btu |
| Available Beds | Queen |
| Refrigerator Type | 12V |
| Refrigerator Size | 17 cu ft |
| Cooktop Burners | 3 |
| Number of Awnings | 2 |
| Axle Weight | 7000 lbs |
| LP Tank Capacity | 30 lbs |
| Water Heater Capacity | 60000 gal |
| Water Heater Type | On Demand Tankless |
| AC BTU | 30000 btu |
| TV Info | LR 50" Flat Screen TV |
| Awning Info | 10'8" & 15' Electric w/LED Light Strip |
| Axle Count | 2 |
| Washer/Dryer Available | Yes |
| Number of LP Tanks | 2 |
| Shower Type | Shower w/Seat |
Forest River Sierra fifth wheel 4003MB highlights: Kitchen Island Four Slides ... more about Sierra 4003MB
Have a question about this floorplan? Contact Us
| Sleeps | 8 |
| Slides | 4 |
| Length | 42 ft 9 in |
| Ext Width | 8 ft |
| Ext Height | 13 ft 4 in |
| Hitch Weight | 2010 lbs |
| GVWR | 15500 lbs |
| Dry Weight | 12609 lbs |
| Cargo Capacity | 2891 lbs |
| Fresh Water Capacity | 50 gals |
| Grey Water Capacity | 100 gals |
| Black Water Capacity | 50 gals |
| Tire Size | 16" |
| Furnace BTU | 40000 btu |
| Number Of Bunks | 1 |
| Available Beds | King |
| Refrigerator Type | 12V |
| Refrigerator Size | 17 cu ft |
| Cooktop Burners | 3 |
| Number of Awnings | 2 |
| Axle Weight | 7000 lbs |
| LP Tank Capacity | 30 lbs |
| Water Heater Capacity | 60000 gal |
| Water Heater Type | On Demand Tankless |
| AC BTU | 30000 btu |
| TV Info | LR 50" Flat Screen TV |
| Awning Info | 20' & 10'8" Electric w/LED Light Strip |
| Axle Count | 2 |
| Washer/Dryer Available | Yes |
| Number of LP Tanks | 2 |
| Shower Type | Shower w/Seat |
Standard Features (2025)
Exterior Features
Interior Features
Appliances/Systems
Construction
For Your Safety
Popular Options
Polar Tech Package (Optional)
Summit Package
Chef's Kitchen Package
Please see us for a complete list of features and available options!
All standard features and specifications are subject to change.
All warranty info is typically reserved for new units and is subject to specific terms and conditions. See us for more details.
Due to the current environment, our features and options are subject to change due to material availability.
Customer Satisfaction is Our #1 Priority.
At Forest River, Inc., your needs, interests, budget, and lifestyle are at the forefront of everything we do. This affects every step from design, to the manufacturing floor, and on to you, our Customer. Whatever your need—recreation, transportation, or cargo hauling—we strive to bring quality products within reach of everyone. It’s not just a slogan: “Customer Satisfaction is Our #1 Priority.”
In 1996, Forest River founder Peter Liegl had a vision. He foresaw an RV company dedicated to helping people experience the joy of the outdoors by building better recreational vehicles. After purchasing certain assets of Cobra Industries, the Company started manufacturing pop-up tent campers, travel trailers, fifth wheels and park models. Continually growing, Forest River now operates multiple manufacturing facilities throughout the United States producing Class A, B and C motorhomes, travel trailers, fifth wheels, toy haulers, pop-up tent campers, truck campers, park model trailers, destination trailers, cargo trailers, commercial vehicles, buses, pontoons, and mobile restroom trailers.
Our large production capacity enables us to fill our customers' orders promptly without cutting corners or rushing through production procedures. This ensures that each Forest River product is conscientiously built and undergoes thorough, detailed inspection before it's shipped to the customer. This guarantees that every family who desires quality recreation will find a Forest River product that serves their needs, interests, budget, and lifestyle.
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