2026 Forest River Sierra 4002FB

New Fifth Wheel in Montclair, California, 91763

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New 2026 Forest River Sierra 4002FB available in Montclair, California
2026 Forest River Sierra 4002FB - New Fifth Wheel For Sale by Giant RV in Montclair, California

Unit Specs

  • Stock #BB56320
  • Year2026
  • ManufacturerForest River
  • Make Forest River
  • ModelSierra
  • Floorplan4002FB
  • Type Fifth Wheel
  • ConditionNew
  • Length43' 5"
  • VIN4X4FSES28TJ055479
  • Sale Price Get Sale Price!
  • Need to know your payment? Use our RV Loan Calculator!
  • Water Capacity (Fresh)50 gal
  • Water Capacity (Black)100 gal
  • Water Capacity (Grey)100 gal

Your camping memories will be unforgettable in this 2026 Forest River Sierra 4002FB. By owning this 2026 Forest River Sierra 4002FB, you’re joining the Forest River family! If you’re thinking of heading off grid, this rig has a 50 fresh water tank.

2026 Forest River Sierra 4002FB Features


2026 Forest River Sierra 4002FB Specifications

Dimensions

Height

13' 4"

Length

43' 5"

Width

8' 0"

Weights

Dry Weight

12,889 lbs

GVWR

15,500 lbs

Hitch Weight

2,340 lbs

Payload Capacity

2,611 lbs

Capacities

Refrigerator Capacity

16 cu ft

Sleep Capacity

6

Water Capacity - Black

100 gal

Water Capacity - Fresh

50 gal

Water Capacity - Grey

100 gal

Exterior

# Awnings

2

# Axles

2

# Doors

1

# Slides

4

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 4002FB Literature


Seller Info

Giant RV

9150 Benson Avenue
Montclair, CA 91763

Member Since 2025

See 490 Reviews

Unit Specs

  • Stock #BB56320
  • Year2026
  • ManufacturerForest River
  • Make Forest River
  • ModelSierra
  • Floorplan4002FB
  • Type Fifth Wheel
  • ConditionNew
  • Length43' 5"
  • VIN4X4FSES28TJ055479
  • Sale Price Get Sale Price!
  • Need to know your payment? Use our RV Loan Calculator!
  • Water Capacity (Fresh)50 gal
  • Water Capacity (Black)100 gal
  • Water Capacity (Grey)100 gal

Email Seller

Request More Info on this 2026 Forest River Sierra 4002FB Offered for sale by Giant RV
Giant RV
Giant RV

9150 Benson Avenue
Montclair, CA 91763

Phone: Click to Call

campground and travel trailer

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New 2026 Forest River Sierra 4002FB available in Montclair, California
2026 Forest River Sierra 4002FB - New Fifth Wheel For Sale by Giant RV in Montclair, California