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Stock Number: FSI207
Exterior Length: 42 ft 9 in
Condition: New
VIN: 4X4FSER24VJ055598
Description: 2027 Forest River Sierra 3900HBLR 2027 Forest River Sierra 3900HBLR is built for families and extended-stay RVers seeking a luxury fifth wheel with...
Updated: Saturday, August 22, 2026 11:04 AM
Location: Colton, California
Seller: Giant RV-Colton
Stock Number: 93401
Condition: New
VIN: 4X4FSER28TJ055438
Description: AI Generated Description The Forest River Sierra 3900HBLR Towable stands out with three slideouts and a substantial length of five hundred thirteen...
Updated: Thursday, September 03, 2026 08:35 AM
Location: Claremore, Oklahoma
Seller: Ron Hoover RV & Marine - Tulsa
Stock Number: 93399
Exterior Length: 42 ft 9 in
Sleeps: 3
Number of Slide Outs: 3
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3900HBLR
Details: Forest River Sierra fifth wheel 3900HBLR highlights: Three Slides Entertainment Center Bath and...
Updated: Thursday, September 03, 2026 08:35 AM
Location: Georgetown, Texas
Seller: Ron Hoover RV & Marine - Georgetown
Stock Number: 93400
Exterior Length: 42 ft 9 in
Sleeps: 3
Number of Slide Outs: 3
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3900HBLR
Details: Forest River Sierra fifth wheel 3900HBLR highlights: Three Slides Entertainment Center Bath and...
Updated: Thursday, September 03, 2026 08:35 AM
Location: San Antonio, Texas
Seller: Ron Hoover RV & Marine - San Antonio
Stock Number: 39122
Exterior Length: 42 ft 9 in
Sleeps: 3
Number of Slide Outs: 3
Condition: New
Exterior Width: 8 ft
Description: New 2026 Forest River RV Sierra 3900HBLR
Details: The following is a list of Additional Options besides the Standard Features come with the unit a...
Updated: Wednesday, August 05, 2026 08:25 AM
Location: Turlock, California
Seller: Best RV Center
Stock Number: 50W111
Exterior Length: 42 ft
Sleeps: 4
Number of Slide Outs: 3
Condition: New
Exterior Color: GREY/WHITE
Description: SIERRA
(2026) These Typical Features, Vary by Model
Living SpacesPower Awning with LED Strip LightingMORryde Step Above Quad Entry StepFoldable Ent...
Updated: Tuesday, August 25, 2026 03:05 AM
Location: Sturgeon Bay, Wisconsin
Seller: Kunes RV of Door County
Stock Number: 219227
Exterior Length: 42 ft 9 in
Sleeps: 3
Number of Slide Outs: 3
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3900HBLR
Details: Forest River Sierra fifth wheel 3900HBLR highlights: Three Slides Entertainment Center Bath and...
Updated: Thursday, September 03, 2026 07:53 AM
Location: Jackson, Michigan
Seller: Fun Town RV - Jackson
Stock Number: TJ055461
Exterior Length: 37 ft 11 in
Sleeps: 4
Number of Slide Outs: 3
Condition: New
Exterior Width: 8 in
Description: FOREST RIVER SIERRA 3900HB TRAVEL TRAILER SPECIFICATIONS: Hitch Weight 2,085 lb. GVWR 16,085 lb. UVW 13,284 lb. CCC 2,801 lb. Exterior Length 42 ...
Updated: Friday, September 04, 2026 12:08 AM
Location: Sweetwater, Texas
Seller: Family RV Center - Sweetwater
Stock Number: 54667
Exterior Length: 42 ft 9 in
Sleeps: 3
Number of Slide Outs: 3
Condition: New
Exterior Width: 8 ft
Description: New 2026 Forest River RV Sierra 3900HBLR
Details: Forest River Sierra fifth wheel 3900HBLR highlights: Three Slides Entertainment Center Bath and...
Updated: Monday, August 17, 2026 04:53 PM
Location: Moose Lake, Minnesota
Seller: Oak Lake RV Sales & Service
Stock Number: A6070
Exterior Length: 42 ft 9 in
Sleeps: 3
Number of Slide Outs: 3
Condition: New
Number of Axles: Tandem
Description: New 2026 Forest River RV Sierra 3900HBLR
Details: Forest River Sierra fifth wheel 3900HBLR highlights: Three Slides Entertainment Center Bath and...
Updated: Tuesday, July 28, 2026 03:15 AM
Location: Appleton, Wisconsin
Seller: Markquart RV - Appleton
Stock Number: 82585
Exterior Length: 42 ft 9 in
Sleeps: 3
Number of Slide Outs: 3
Condition: New
Number of Axles: Tandem
Description: New 2026 Forest River RV Sierra 3900HBLR
Details: Forest River Sierra fifth wheel 3900HBLR highlights: Three Slides Entertainment Center Bath and...
Updated: Tuesday, September 01, 2026 09:57 AM
Location: Greencastle, Pennsylvania
Seller: Keystone RV Center
Stock Number: 215133
Exterior Length: 42 ft 9 in
Sleeps: 3
Number of Slide Outs: 3
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3900HBLR
Details: Forest River Sierra fifth wheel 3900HBLR highlights: Three Slides Entertainment Center Bath and...
Updated: Thursday, September 03, 2026 07:53 AM
Location: Crystal River, Florida
Seller: Fun Town RV - Nature Coast
Stock Number: 218185
Exterior Length: 42 ft 9 in
Sleeps: 3
Number of Slide Outs: 3
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3900HBLR
Details: Forest River Sierra fifth wheel 3900HBLR highlights: Three Slides Entertainment Center Bath and...
Updated: Thursday, September 03, 2026 07:53 AM
Location: Anna, Illinois
Seller: Fun Town RV-Cleburne
Stock Number: 217295
Exterior Length: 42 ft 9 in
Sleeps: 3
Number of Slide Outs: 3
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3900HBLR
Details: Forest River Sierra fifth wheel 3900HBLR highlights: Three Slides Entertainment Center Bath and...
Updated: Thursday, September 03, 2026 07:53 AM
Location: Edinburgh, Indiana
Seller: Fun Town RV - Indianapolis
Stock Number: 215134
Exterior Length: 42 ft 9 in
Sleeps: 3
Number of Slide Outs: 3
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3900HBLR
Details: Forest River Sierra fifth wheel 3900HBLR highlights: Three Slides Entertainment Center Bath and...
Updated: Thursday, September 03, 2026 07:53 AM
Location: Rockford, Michigan
Seller: Fun Town RV - Grand Rapids
Stock Number: A6188
Condition: New
VIN: 4X4FSES28VJ055582
Description: New 2027 Forest River RV Sierra 3990FL
Details: Call for details.
Updated: Tuesday, August 25, 2026 03:13 AM
Location: Appleton, Wisconsin
Seller: Markquart RV - Appleton
Stock Number: 219669
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed Walk-In Shower Fr...
Updated: Thursday, September 03, 2026 07:53 AM
Location: Conroe, Texas
Seller: Fun Town RV-Conroe
Stock Number: 348072
Exterior Length: 3 ft 7 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Width: 8 in
Description: NEW 2026 FOREST RIVER SIERRA 3990FL – 348072
**Forest River Sierra fifth wheel 3990FL highlights:**
- King Bed
- Front Living Area
- Tw...
Updated: Monday, August 17, 2026 10:16 AM
Location: Mesa, Arizona
Seller: General RV Colorado
Stock Number: 93398
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: King Bed Front Living Area Two Tri-Fold Hide-A...
Updated: Thursday, September 03, 2026 08:35 AM
Location: San Antonio, Texas
Seller: Ron Hoover RV & Marine - San Antonio
Stock Number: 87678
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: King Bed Front Living Area Two Tri-Fold Hide-A...
Updated: Thursday, September 03, 2026 08:35 AM
Location: Texarkana, Texas
Seller: Ron Hoover RV & Marine - Texarkana
Stock Number: 87679
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: King Bed Front Living Area Two Tri-Fold Hide-A...
Updated: Thursday, September 03, 2026 08:35 AM
Location: Georgetown, Texas
Seller: Ron Hoover RV & Marine - Georgetown
Stock Number: 220885
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed Walk-In Shower Fr...
Updated: Thursday, September 03, 2026 07:53 AM
Location: Anna, Illinois
Seller: Fun Town RV-Cleburne
Stock Number: 219670
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed Walk-In Shower Fr...
Updated: Thursday, September 03, 2026 07:53 AM
Location: Rockwall, Texas
Seller: Fun Town RV-Cleburne
Stock Number: HL6081
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Number of Axles: Tandem
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: King Bed Front Living Area Two Tri-Fold Hide-A...
Updated: Wednesday, August 19, 2026 03:13 AM
Location: Andover, Minnesota
Seller: North Country RV
Stock Number: 217297
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed Walk-In Shower Fr...
Updated: Thursday, September 03, 2026 07:53 AM
Location: Jackson, Michigan
Seller: Fun Town RV - Jackson
Stock Number: T89498
Condition: New
VIN: 4X4FSES26SJ053986
Description: AI Generated Description Forest River Sierra 3990FL stands out with five slideouts and a generous 522 inches of body length, creating expansive int...
Updated: Thursday, September 03, 2026 08:35 AM
Location: Claremore, Oklahoma
Seller: Ron Hoover RV & Marine - Tulsa
Stock Number: T89498
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Number of Axles: Tandem
Description: New 2025 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed Walk-In Shower Fr...
Updated: Thursday, September 03, 2026 08:35 AM
Location: Claremore, Oklahoma
Seller: Ron Hoover RV & Marine - Tulsa
Stock Number: 054029F
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: White
Description: New 2025 Forest River RV Sierra 3990FL
Details: NO HIDDEN FEES!!! WE DO NOT CHARGE PDI OR FREIGHT FEES!!! LET US HELP YOU SAVE MONEY!!! Forest ...
Updated: Wednesday, September 02, 2026 09:46 AM
Location: Bryan, Texas
Seller: T&S RV & Sport - Bryan
