Chassis & Towing
15,500 lbs GVWR
Designed to handle your gear with a Gross Vehicle Weight Rating of 15,500 lbs.
2026 Forest River Sierra 3800RK
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Layout & Media
Explore the floorplan, 3D tour, walkthrough videos
Complete Fifth Wheel Specifications
2026 Forest River Sierra Overview
Experience the great outdoors with the 2026 Forest River Sierra 3800RK, a remarkable fifth wheel designed for adventure seekers. With a generous length of 44 ft and a dry weight of 12,849 lbs, this model offers a spacious layout that comfortably sleeps 4, making it perfect for family trips or weekend getaways. The rear kitchen is ideal for preparing meals while enjoying the scenery, and the tankless water heater ensures you'll have hot water on demand. The Sierra's reputation for quality and durability makes it a reliable choice for all your travels. Schedule your tour today to see how this versatile fifth wheel can elevate your camping experience!
Premium Features & Highlights
Spacious Interior Layout
Tankless Water Heater for On-Demand Hot Water
Rear Kitchen for Convenient Meal Prep
Great for Family Trips with Sleeping Capacity for 4
Lightweight at 12,849 lbs for Easy Towing
Select a category to view specs
Overview
Vehicle Identification & Details
8 specifications available
- Category
- Fifth Wheel
- Condition
- new
- Floorplan
- 3800RK
- Make
- Forest River
- Model
- Sierra
- Stock Number
- TJ055016
- VIN
- 4X4FSEP20TJ055016
- Year
- 2026
Size & Weight
Dimensions, Weight, Construction & Exterior
7 specifications available
- Dry Weight
- 12,849 lbs
- GVWR
- 15,500 lbs
- Length
- 44.08 ft
- Exterior Height
- 13.33 ft
- Width
- 8 ft
- Awnings Count
- 2
- Slides
- 4
Sleeping & Layout
Beds, Layout, Living & Comfort
6 specifications available
- Bunk Beds Count
- 0
- King Beds Count
- 1
- Primary Bedroom Location
- Front
- Murphy Beds Count
- 0
- Sleeps
- 4
- Interior Lighting
- LED
Kitchen & Dining
Cooking, Dining & Appliances
5 specifications available
- Outdoor Kitchen
- Yes
- Kitchen Location
- Rear
- Refrigerator Power Mode
- 12V
- Refrigerator Size
- 16
- Washer Dryer Prep
- Yes
Bathroom & Facilities
Comfort & Privacy
1 specifications available
- Shower Type
- Standard
Water Systems
Tanks & Plumbing
4 specifications available
- Black Water Capacity
- 50 gal
- Fresh Water Capacity
- 50 gal
- Gray Water Capacity
- 100
- Has Tankless Water Heater
- Yes
Power & Electrical
Electrical, Entertainment & Safety
2 specifications available
- Solar Ready
- Yes
- Washer Dryer Prewiring
- Yes
Climate Control
Heating & Cooling
1 specifications available
- Heater Btu
- 60,000 BTU
Standard Features & Equipment
5/8" tongue and groove DryMax® OSB floor decking
2 x 3 floor joists, 12" on center
Smoke alarm
Fire extinguisher
Two chairs in place of ottoman bench, Cordless vacuum, Slide room awnings (N/A dinette slides), Washer and Dryer (Standard on 3800RK & 3900HBLR), Dual pane windows (N/A 3900HBLR 84” Window), 3rd A/C power saver direct dump system w/ wall thermostat,
Automatic Electric Level-Up System, 2" Towing and Accessory Hitch (Where Available), 7,000lb axles with Anti-lock Braking System, Goodyear Radial Tires w/ anti-lock brakes, Lippert auto adjust brakes, Rich Solar 200W roof mounted solar panel with controller and battery, Quad MORryde® step above with strut (Where Available), Color matched high gloss gel coated colored exterior fiberglass, Painted two tone aerodynamic fiberglass front cap with improved turning radius, Underbelly Armor, Tire Pressure Monitoring System, Spare tire, Large, tinted windows with 80/20 UV prohibitor, Electric awning with LED light strip, Prepped for Lippert On-The-Go Ladder, Power front jacks with spring loaded pins, Automotive-style fender skirts, Hitch light, Porch light with interior switch, 30 lb. double LP tanks with auto change over, Rain gutters with extra-long drip spouts (Prevents black streaking), Insulated heavy duty slam lock baggage doors, Exterior foldable grab handle, Unobstructed pass-through storage area, Upgraded aluminum rims, Oversized friction hinge entry door with extended latch (Main Entry), Exterior LP Quick Connect,
Solid Surface Kitchen Counter tops, Fiberglass one-piece shower, Washer and Dryer Prep, 7’ slide-out height (Main Slides), Stainless steel kitchen package, Beachside Sundance Congoleum linoleum, Hidden hinged, soft close drawers and cabinets, Full extension ball bearing drawer guides, Stainless steel under mounted kitchen sink, Trash receptacle in kitchen, Decorative backsplash, Two color coordinated interiors, LED lighting throughout, Recessed residential lighting, Accent lighting over dinette, Extra-large, panoramic picture windows throughout, Vented side windows in slide-outs, TV antenna with booster, Solid wood drawer fronts with birch sides, Solid wood, square inset cabinet doors, painted or wood grain, Bedroom slide-out fascia, Memory foam mattress, 50" flatscreen smart TV (65” 3900HBLR), JBL Aura Cube FM/Bluetooth media center, Designer window treatment, Ceiling fan, Tri-fold hide-a-bed sofa, Quilted bedspread, Prepped for inverter, Teddy Bear® bunk mats,
Dual ducted 15k BTU Air Conditioners, prepped for 3rd 15k BTU A/C, AIRDIRECT® Air Vents for improved efficiency, 16 cu. ft. 12V refrigerator, 60,000BTU On Demand Tankless Water Heater, 40,000BTU furnace, Heated Holding Tanks (12V), Floor ducted 40,000BTU furnace, 30" OTR stainless steel microwave, Chef collection 3 burner / 24" oven with drawer, Interior monitor panel for holding tanks, Satellite and cable hookup with RG-6 cable for high quality picture, Porcelain foot flush toilet(s), 65 Amp converter, Power fan in Kitchen and Bathroom(s),
* Vehicle specifications listed to the best of our knowledge. All specifications, features, and information are provided by the manufacturer. RV Value Mart is not responsible for manufacturer defects, specification changes, or recalls. Buyers should verify all information directly with RV Value Mart.
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Built to Last
Superior construction for years of adventures
Plumbing
50-Gallon Fresh Water Tank
Ample fresh water capacity for extended trips off the grid.
Plumbing
50-Gallon Black Water Capacity
Sufficient capacity for longer stays without frequent dumping.
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Payment Calculator
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from $481/mo
Estimated • 20% down
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Showroom Hours
Mon-Fri: 9AM-6PM
47 Lancaster Pike Willow Street, PA 17584
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Trade Evaluation
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Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. We are not responsible for any misprints, typos, or errors found in our website pages. Any price listed excludes sales tax, registration tags, and delivery fees. Manufacturer pictures, specifications, and features may be used in place of actual units on our lot. Please contact us for availability as our inventory changes rapidly. All calculated payments are an estimate only and do not constitute a commitment that financing or a specific interest rate or term is available.
$68,099
est $488/mo