2026 Forest River Sierra 3990FL

New Fifth Wheel in Middlebury, Indiana, 46540

$68,995.00
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New 2026 Forest River Sierra 3990FL available in Middlebury, Indiana
2026 Forest River Sierra 3990FL - New Fifth Wheel For Sale by Royal RV Center in Middlebury, Indiana features Slideout
2026 Sierra 3990FL by Forest River from Royal RV Center in Middlebury, Indiana
New 2026 Forest River Sierra 3990FL available in Middlebury, Indiana

Unit Specs

  • Stock #R054727
  • Year2026
  • ManufacturerForest River
  • Make Forest River
  • ModelSierra
  • Floorplan3990FL
  • Floorplan LayoutFront Entertainment
    Front Living Area
    Kitchen Island
    Loft
    Rear Bedroom
  • Type Fifth Wheel
  • ConditionNew
  • Length43' 0"
  • VIN4X4FSES27TJ054727
  • Price $97,053.00
  • Sale Price $68,995.00
  • Need to know your payment? Use our RV Loan Calculator!
  • Sleeps8
  • Water Capacity (Fresh)50 gal
  • Water Capacity (Black)50 gal
  • Water Capacity (Grey)80 gal
  • Slideouts5
  • Tow/Hitch Weight2825 lbs
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Forest River Sierra 3990FL Fifth Wheel for Sale in Middlebury, IN

If you're searching for a large family fifth wheel in Indiana with multiple sleeping areas and residential comfort, the Forest River Sierra 3990FL is built to impress. Available now at Royal RV Center in Middlebury, IN, this spacious model is perfect for big families or hosting guests.

Sleeps Eight or More with Loft Space

This unique layout offers incredible sleeping capacity with:

  • Full and half lofts featuring bunk mats and storage
  • Rear master bedroom with king bed slide
  • Two tri-fold hide-a-bed sofas in the living area

Perfect for kids, guests, or extended family trips.

Front Living Room with Fireplace

Enjoy a dedicated front living area with:

  • Theater seating
  • Two sofa sleepers
  • 50" TV and fireplace

A great space to relax, entertain, or unwind after a long day.

Spacious Kitchen with Island

The central kitchen features:

  • Kitchen island with large sink
  • Free-standing dinette
  • 12V refrigerator and stove
  • Ample counter space and storage

Designed for easy meal prep and family dining.

Private Master Suite & Large Bath

The rear bedroom includes a king bed slide, while the bathroom offers a walk-in shower with seat for added comfort.

Built for Comfort & Durability

  • Welded aluminum frame with vacuum-bonded construction
  • Enclosed underbelly with armor protection
  • Electric leveling system for quick setup
  • Goodyear tires with 7,000 lb. axles

Premium Interior Features

  • Residential lighting and cabinetry
  • Rustic wood plank flooring
  • Memory foam mattress
  • Wi-Fi extender system

Available at Royal RV Center

Visit Royal RV Center in Middlebury, Indiana, proudly serving Indiana, Michigan, Ohio, and beyond, to explore the Forest River Sierra 3990FL fifth wheel and enjoy spacious, comfortable camping for the whole family.

   
  • Front Entertainment
  • Front Living
  • Kitchen Island
  • Loft
  • Rear Bedroom

2026 Forest River Sierra 3990FL Features


  • Exterior
    Slideout

2026 Forest River Sierra 3990FL Specifications

Dimensions

Height

13' 4"

Length

43' 6"

Width

8' 0"

Weights

Dry Weight

12,439 lbs

GVWR

15,375 lbs

Hitch Weight

2,825 lbs

Payload Capacity

2,936 lbs

Capacities

Refrigerator Capacity

16 cu ft

Sleep Capacity

10

Water Capacity - Black

50 gal

Water Capacity - Fresh

50 gal

Water Capacity - Grey

80 gal

Exterior

# Awnings

1

# Axles

2

# Doors

1

# Slides

5

Hitch

Fifth Wheel

Electrical

# A/C

2

A/C Spec

Dual ducted 15k BTU Air Conditioners, prepped for 3rd 15k BTU A/C

*MFG Specs are for base unit. Certain options may change specifications listed. Please consult dealer for more details. Data is provided by a 3rd party. RVUSA.com cannot guarantee the accuracy of the data presented.

2026 Forest River Sierra 3990FL Literature


Seller Info

Royal RV Center

14441 US HWY 20
Middlebury, IN 46540

Member Since 2020

See 170 Reviews

Unit Specs

  • Stock #R054727
  • Year2026
  • ManufacturerForest River
  • Make Forest River
  • ModelSierra
  • Floorplan3990FL
  • Floorplan LayoutFront Entertainment
    Front Living Area
    Kitchen Island
    Loft
    Rear Bedroom
  • Type Fifth Wheel
  • ConditionNew
  • Length43' 0"
  • VIN4X4FSES27TJ054727
  • Price $97,053.00
  • Sale Price $68,995.00
  • Need to know your payment? Use our RV Loan Calculator!
  • Sleeps8
  • Water Capacity (Fresh)50 gal
  • Water Capacity (Black)50 gal
  • Water Capacity (Grey)80 gal
  • Slideouts5
  • Tow/Hitch Weight2825 lbs

Estimated Payment-

Interest Rate % *(W.A.C.)
Term Years
Down Payment $
*W.A.C. = With approved credit

Email Seller

Request More Info on this 2026 Forest River Sierra 3990FL Offered for sale by Royal RV Center
Royal RV Center
Royal RV Center

14441 US HWY 20
Middlebury, IN 46540

Phone: Click to Call

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2026 Forest River Sierra 3990FL Gallery

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New 2026 Forest River Sierra 3990FL available in Middlebury, Indiana
2026 Forest River Sierra 3990FL - New Fifth Wheel For Sale by Royal RV Center in Middlebury, Indiana features Slideout
2026 Sierra 3990FL by Forest River from Royal RV Center in Middlebury, Indiana
New 2026 Forest River Sierra 3990FL available in Middlebury, Indiana