2026 FOREST RIVER NO BOUNDARIES (18 SERIES) 18.3BM
20
Rv TypeTravel Trailer
Length-
Fuel Type-
Mileage-
Description
2026 Forest River No Boundaries 18.3 BEAST MODE,
The NB18.3 is a rear bath travel trailer that blends comfort and versatility in a compact, easy-to-tow design. Its slide-out sofa opens the living space for relaxing or entertaining, while the front queen bed offers a cozy place to unwind. The spacious rear bath provides full facilities and added privacy, and the well-equipped indoor and outdoor kitchens make cooking simple. Lightweight yet full-featured, the NB18.3 delivers big adventure in a small package.
Specifications
Hitch Weight - 545 lb.
GVWR - 5,603 lb.
UVW - 4,103 lb.
CCC - 1,500 lb.
Exterior Length - 20' 6"
Exterior Height - 10' 10"
Exterior Width - 96"
Fresh Water - 40 gal.
Gray Water - 40 gal.
Black Water - 30 gal.
Awning Size - 13'
Specifications Definitions
GVWR (Gross Vehicle Weight Rating)
is the maximum permissible weight of the unit when fully loaded. It includes all weights, inclusive of all fluids, cargo, optional equipment and accessories. For safety and product performance do NOT exceed the GVWR.
GAWR (Gross Axle Weight Rating) is the maximum permissible weight, including cargo, fluids, optional equipment and accessories that can be safely supported by a combination of all axles.
UVW (Unloaded Vehicle Weight)*- is the typical weight of the unit as manufactured at the factory. It includes all weight at the unit s axle(s) and tongue or pin and LP Gas. The UVW does not include cargo, fresh potable water, additional optional equipment or dealer installed accessories.
*Estimated Average based on standard build optional equipment.
CCC (Cargo Carrying Capacity)** - is the amount of weight available for fresh potable water, cargo, additional optional equipment and accessories. CCC is equal to GVWR minus UVW. Available CCC should accommodate fresh potable water (8.3 lbs per gallon). Before filling the fresh water tank, empty the black and gray tanks to provide for more cargo capacity.
**Estimated Average based on standard build optional equipment.
Each Forest River RV is weighed at the manufacturing facility prior to shipping. A label identifying the unloaded vehicle weight of the actual unit and the cargo carrying capacity is applied to every Forest River RV prior to leaving our facilities.
The load capacity of your unit is designated by weight, not by volume, so you cannot necessarily use all available space when loading your unit.
NB18.3 Floorplan Features & Options
C-Series Package (Mandatory Package)
Extended Season ReadyAluminum Framed Floor w/ Block Foam Insulation
The NB18.3 is a rear bath travel trailer that blends comfort and versatility in a compact, easy-to-tow design. Its slide-out sofa opens the living space for relaxing or entertaining, while the front queen bed offers a cozy place to unwind. The spacious rear bath provides full facilities and added privacy, and the well-equipped indoor and outdoor kitchens make cooking simple. Lightweight yet full-featured, the NB18.3 delivers big adventure in a small package.
Specifications
Hitch Weight - 545 lb.
GVWR - 5,603 lb.
UVW - 4,103 lb.
CCC - 1,500 lb.
Exterior Length - 20' 6"
Exterior Height - 10' 10"
Exterior Width - 96"
Fresh Water - 40 gal.
Gray Water - 40 gal.
Black Water - 30 gal.
Awning Size - 13'
Specifications Definitions
GVWR (Gross Vehicle Weight Rating)
is the maximum permissible weight of the unit when fully loaded. It includes all weights, inclusive of all fluids, cargo, optional equipment and accessories. For safety and product performance do NOT exceed the GVWR.
GAWR (Gross Axle Weight Rating) is the maximum permissible weight, including cargo, fluids, optional equipment and accessories that can be safely supported by a combination of all axles.
UVW (Unloaded Vehicle Weight)*- is the typical weight of the unit as manufactured at the factory. It includes all weight at the unit s axle(s) and tongue or pin and LP Gas. The UVW does not include cargo, fresh potable water, additional optional equipment or dealer installed accessories.
*Estimated Average based on standard build optional equipment.
CCC (Cargo Carrying Capacity)** - is the amount of weight available for fresh potable water, cargo, additional optional equipment and accessories. CCC is equal to GVWR minus UVW. Available CCC should accommodate fresh potable water (8.3 lbs per gallon). Before filling the fresh water tank, empty the black and gray tanks to provide for more cargo capacity.
**Estimated Average based on standard build optional equipment.
Each Forest River RV is weighed at the manufacturing facility prior to shipping. A label identifying the unloaded vehicle weight of the actual unit and the cargo carrying capacity is applied to every Forest River RV prior to leaving our facilities.
The load capacity of your unit is designated by weight, not by volume, so you cannot necessarily use all available space when loading your unit.
NB18.3 Floorplan Features & Options
C-Series Package (Mandatory Package)
Extended Season ReadyAluminum Framed Floor w/ Block Foam Insulation
RV details
Type
Travel Trailer
Condition
New
Odometer
0 mi
Floor plan
NO BOUNDARIES (18 SERIES)
Dealer stock ID
1103
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Dealer information
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Contact the seller
Call the dealer
(940) 209-3037
RV code: 1578