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We do our best to keep listing details accurate, but pricing, specifications, and availability come from third-party sources and can change without notice. We can't guarantee accuracy, so please confirm the details with the dealer before making any decisions. See something inaccurate? Contact us.

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    1. Home
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    3. 2026 Forest River Sandpiper 3900HBLR

    2026 Forest River Sandpiper 3900HBLR

    NewFifth wheel|Stock #J048432|Located at RV Dynasty in Bunker Hill, IN
    $62,995$63,495
    Save $500
    RV Envy

    2026 Forest River Sandpiper 3900HBLR

    New · Fifth wheel

    $62,995$63,495Save $500

    RV Dynasty

    10001 S Us Highway 31

    Bunker Hill, IN 46914

    (855) 284-3486

    Stock #J048432

    2026 Forest River Sandpiper 3900HBLR floor plan

    Specifications

    Length42 ft 9 in
    Dry weight13,284 lbs
    Sleeps3 people
    Slideouts3

    Full specifications

    AC BTU30000 btu
    Available BedsKing
    Awning Info12' & 18' Electric w/LED Light Strip
    Axle Weight7000 lbs
    Black Water Capacity104 gals
    Cargo Capacity2801 lbs
    Cooktop Burners3
    Dry Weight13284 lbs
    Ext Height13 ft 4 in
    Ext Width8 ft
    Fresh Water Capacity50 gals
    Furnace BTU40000 btu
    GVWR13085 lbs
    Grey Water Capacity136 gals
    Hitch Weight2085 lbs
    LP Tank Capacity30 lbs
    Length42 ft 9 in
    Number of Awnings2
    Number of LP Tanks2
    Refrigerator Type12V
    Shower TypeShower w/Seat
    Sleeps3
    Slides3
    TV InfoLR 50" Flat Screen TV
    Tire Size16"
    Washer/Dryer AvailableYes
    Water Heater Capacity60000 gal
    Water Heater TypeOn Demand Tankless

    Options and equipment may differ from those listed. We do our best to ensure accuracy, but please confirm all details with the dealer before purchase.

    Get more info

    2026 Sandpiper 3900HBLR

    2026 Sandpiper 3900HBLR
    I'm interested in
    Preferred contact method
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    The dealer sees only your first name and general area, not your full name, email, or phone. You'll chat through RV Envy and can share your info anytime.

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    Dealer information

    RV Dynasty

    10001 S Us Highway 31
    Bunker Hill, IN 46914
    (855) 284-3486

    No Fees

    DRIFTWOOD DECOR!!!

    WASHER/DRYER!!!

    Forest River Sandpiper fifth wheel 3900HBLR highlights:

    • Three Slides

    • Entertainment Center

    • Bath and a Half

    • Walk-In Bathroom Closet

    • 12V Refrigerator

    This fifth wheel is perfect for those seeking a comfortable, feature-rich home on wheels. Upon entering, you'll find a spacious rear living room, ideal for relaxation and entertainment. The room features a comfortable chase lounge, sofa, and an entertainment center with a cozy fireplace. For added convenience, there's a hidden pantry, desk with a chair, and a shelf and cabinet for storage. The kitchen is well-appointed with a stylish kitchen island featuring a beautiful waterfall edge. Overhead cabinets provide ample storage, while the microwave, 12V refrigerator, and four-burner cooktop make meal preparation a breeze. Plus, a butler pantry offers additional storage for kitchen essentials. A convenient half bath is located nearby, complete with a stackable washer and dryer prep if you want the option to add these appliances. The bedroom retreat features a comfortable king bed, a small dresser, and a tall dresser with a TV hookup. The adjacent walk-in bathroom closet boasts a one-piece fiberglass shower with a seat, dual sink, medicine cabinet, linen closet, and ample storage thanks to the various shelves, perfect for keeping your belongings organized. Exterior features include two awnings, one 12’ and the other 18’, providing ample shade and protection.

    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 welded aluminum framed, vacuum bonded laminated superstructure will hold up through every adventure and the cambered powder coated frame comes with rust prohibitor to last longer. Each model also includes the Summit Package that comes with a king Wi-Fi extender system and Olympus antenna, a full coach water filter system, Goodyear tires with 7,000 lb. axles, and the list goes on. The interior is just as impressive with rustic wood plank linoleum, recessed residential lighting, a memory foam mattress, and mocha accent crown molding over the kitchen cabinets!

    No Fees

    DRIFTWOOD DECOR!!!

    WASHER/DRYER!!!

    Forest River Sandpiper fifth wheel 3900HBLR highlights:

    • Three Slides

    • Entertainment Center

    • Bath and a Half

    • Walk-In Bathroom Closet

    • 12V Refrigerator

    This fifth wheel is perfect for those seeking a comfortable, feature-rich home on wheels. Upon entering, you'll find a spacious rear living room, ideal for relaxation and entertainment. The room features a comfortable chase lounge, sofa, and an entertainment center with a cozy fireplace. For added convenience, there's a hidden pantry, desk with a chair, and a shelf and cabinet for storage. The kitchen is well-appointed with a stylish kitchen island featuring a beautiful waterfall edge. Overhead cabinets provide ample storage, while the microwave, 12V refrigerator, and four-burner cooktop make meal preparation a breeze. Plus, a butler pantry offers additional storage for kitchen essentials. A convenient half bath is located nearby, complete with a stackable washer and dryer prep if you want the option to add these appliances. The bedroom retreat features a comfortable king bed, a small dresser, and a tall dresser with a TV hookup. The adjacent walk-in bathroom closet boasts a one-piece fiberglass shower with a seat, dual sink, medicine cabinet, linen closet, and ample storage thanks to the various shelves, perfect for keeping your belongings organized. Exterior features include two awnings, one 12’ and the other 18’, providing ample shade and protection.

    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 welded aluminum framed, vacuum bonded laminated superstructure will hold up through every adventure and the cambered powder coated frame comes with rust prohibitor to last longer. Each model also includes the Summit Package that comes with a king Wi-Fi extender system and Olympus antenna, a full coach water filter system, Goodyear tires with 7,000 lb. axles, and the list goes on. The interior is just as impressive with rustic wood plank linoleum, recessed residential lighting, a memory foam mattress, and mocha accent crown molding over the kitchen cabinets!

    Specifications

    Length

    42 ft 9 in

    Dry weight

    13,284 lbs

    Sleeps

    3 people

    Slideouts

    3

    Specifications

    Length

    42 ft 9 in

    Dry weight

    13,284 lbs

    Sleeps

    3 people

    Slideouts

    3

    Unit features & options

    • 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

    Unit features & options

    • 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

    Full specifications

    As provided in the original listing

    AC BTU30000 btu
    Available BedsKing
    Awning Info12' & 18' Electric w/LED Light Strip
    Axle Weight7000 lbs
    Black Water Capacity104 gals
    Cargo Capacity2801 lbs
    Cooktop Burners3
    Dry Weight13284 lbs
    Ext Height13 ft 4 in
    Ext Width8 ft
    Fresh Water Capacity50 gals
    Furnace BTU40000 btu
    GVWR13085 lbs
    Grey Water Capacity136 gals
    Hitch Weight2085 lbs
    LP Tank Capacity30 lbs
    Length42 ft 9 in
    Number of Awnings2
    Number of LP Tanks2
    Refrigerator Type12V
    Shower TypeShower w/Seat
    Sleeps3
    Slides3
    TV InfoLR 50" Flat Screen TV
    Tire Size16"
    Washer/Dryer AvailableYes
    Water Heater Capacity60000 gal
    Water Heater TypeOn Demand Tankless

    Full specifications

    As provided in the original listing

    AC BTU30000 btu
    Available BedsKing
    Awning Info12' & 18' Electric w/LED Light Strip
    Axle Weight7000 lbs
    Black Water Capacity104 gals
    Cargo Capacity2801 lbs
    Cooktop Burners3
    Dry Weight13284 lbs
    Ext Height13 ft 4 in
    Ext Width8 ft
    Fresh Water Capacity50 gals
    Furnace BTU40000 btu
    GVWR13085 lbs
    Grey Water Capacity136 gals
    Hitch Weight2085 lbs
    LP Tank Capacity30 lbs
    Length42 ft 9 in
    Number of Awnings2
    Number of LP Tanks2
    Refrigerator Type12V
    Shower TypeShower w/Seat
    Sleeps3
    Slides3
    TV InfoLR 50" Flat Screen TV
    Tire Size16"
    Washer/Dryer AvailableYes
    Water Heater Capacity60000 gal
    Water Heater TypeOn Demand Tankless

    Price history

    Days listed

    403

    Price drops

    17

    Total price reduction

    -$10,500

    Sign in to see 17 price changes

    Price history

    Days listed

    403

    Price drops

    17

    Total price reduction

    -$10,500

    Sign in to see 17 price changes

    Get more info

    2026 Sandpiper 3900HBLR

    2026 Sandpiper 3900HBLR
    I'm interested in
    Preferred contact method
    EmailPhone callText message

    The dealer sees only your first name and general area, not your full name, email, or phone. You'll chat through RV Envy and can share your info anytime.

    We'll add you to our weekly newsletter too, but you can unsubscribe at anytime.