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Used 2026 Forest River RV Sierra 3800RK

Fifth Wheel

Stock #18021A

Donna, TX

1 of 1

List Price: $85,250

Payments From: $1,350 /mo.

44ft long
12,849 lbs
Sleeps 4

4 slides
Front Bath

Rear Kitchen

See All Specs

Specifications

Sleeps	4	Slides	4
Length	44 ft 1 in	Ext Width	8 ft
Ext Height	13 ft 4 in	Int Height	7 ft
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	Furnace BTU	40000 btu
Available Beds	King	Refrigerator Type	12V
Refrigerator Size	16 cu ft	Cooktop Burners	3
Number of Awnings	2	Axle Weight	7000 lbs
LP Tank Capacity	30 lbs	Water Heater Type	On Demand Tankless
AC BTU	30000 btu	TV Info	LR 50" Flat Screen Smart TV
Awning Info	13' & 16' Electric w/LED Light Strip	Axle Count	2
Washer/Dryer Available	Yes	Number of LP Tanks	2
Shower Type	Standard	Electrical Service	65 amp
VIN	4X4FSEP23TJ054698

Description

Forest River Sierra fifth wheel 3800RK highlights:

Four Slides
Theater Seating
Walk-In Bathroom Closet
12V Refrigerator

This fifth wheel is packed with convenient features to make your travels more comfortable and enjoyable! The master bedroom includes a king bed slide out with USB ports on either side of the bed so you both can charge your phones, and there is a dresser for your folded clothes. You will love the front bathroom with dual bath sinks, a fiberglass one-piece shower, plus a walk-in closet with shelves and rods to hang clothes! There is a unique middle utility room with washer and dryer prep if you want to add these, a Washer and dryer counter and a rod to hang clothes that will make a perfect laundry room, or you can utilize this space for storage! Head to the main living area to relax on the theater seating or hide-a-bed sofa, and if you have guests stay over, they can sleep here. There is also an entertainment center with a 50" flat screen TV, but you might just leave that off if you're working at the desk with a chair that is provided. We've saved the best part for last, the kitchen! Here, you'll find ample counter space to prep home-cooked meals, a three-burner range with a 24" oven, plus a large counter with barstools where you can enjoy breakfast at each morning. Choosing this fifth wheel is a no-brainer!

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!

Features

Standard Features (2026)

Exterior Features

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

Interior Features

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
Teddy Bear® bunk mats
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

Appliances/Systems

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 drawers
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)

Construction

5/8" tongue and groove DryMax® OSB floor decking
2 x 3 floor joists, 12" on center
Laminated sidewalls
3/8" roof decking (Full walk-on roof)
Cambered powder coated frame with rust prohibitor
Underbelly armor
5" truss roof rafters
R-10, 2" sidewall construction
Laminated slide-out walls

For Your Safety

Smoke alarm
Fire extinguisher
Breakaway switch (Battery hook-up required)
Dead-bolt lock on entry door
LP/CO2 gas detector
Fire escape windows

Popular Options

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

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.

Favorite RVs

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Excellent Customer Service
Sales guy (Jamie) was great. He went above and beyond to help us out. Finance was great as well. Very smooth and easy purchase. Had a water heater issue first time we took it out. Service dept. Helped me get it fixed very quickly. 5 stars all the way around in my book

Bones
Excellent Customer Service
These folks are really wonderful. I was truly in a bind as I was headed out of town and Tom, the Service Manager came to help, on his own time. I went by a week later and thanked them and they helped me again. Such a terrific experience, I highly recommend them.

John
Excellent Customer Service
We were very pleased with their service. They fixed our Jaco RV even though they didn’t sell that brand. we were traveling and had an issue with our RV and stopped there, and they fixed it, and didn’t charge us anything.

Yolanda

We are here to help, call us at
956-299-2032 or Contact Us

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956-299-2032
Contact Us
Contact Sales

RV Station - Texas RV Show is 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 @956-655-1101 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.

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Used 2026 Forest River RV Sierra 3800RK

3800RK Floorplan

Specifications

Description

Features