New 2025 Forest River SANDPIPER 3990FL

The 2025 Sandpiper 3990FL is a five-slide fifth wheel with a front-living layout, a full loft above the rear area, and a design built for versatility and comfort on campground trips.

The central zone offers a roomy gathering area with seating and an entertainment center topped with a large flat-screen TV — a comfortable spot for campers who want space to relax after a day outdoors. The kitchen features a kitchen island, stainless-steel appliances, a 17 cu ft 12-V refrigerator, solid-surface countertops, pantry storage, and ample cabinetry — ideal for preparing meals and storing supplies while on the road. 

The private rear bedroom includes a king-bed slide, wardrobe storage, and prep for washer/dryer hookups a plus for longer stays or families needing extra convenience.

The loft above the rear part of the “loft & half” floorplan adds extra sleeping or storage capacity, making this unit great for larger groups or families traveling together. 

Construction and utility features include an automatic electric level-up system, 7,000-lb axles with anti-lock braking, a tankless on-demand water heater, fully enclosed underbelly, and generous water and waste capacities. 

This fifth wheel gives campers a versatile layout, real kitchen convenience, extra sleeping capacity, and dependable construction — a great choice for campground plans. Available now at Tri-Am RV Center.

Retail Price
$104,159
Sales Price
$79,595
Stock # 11073
Condition NEW
Status AVAILABLE
Year 2025
Make Forest River
Model SANDPIPER
Trim 3990FL
Download Attachment

Specifications

General
Exterior Color WHITE
Class FIFTH WHEEL
Dry Weight (LBS) 12380 LBS
Other Specifications
Length (FT) 43' 6"

The 2025 Sandpiper 3990FL is a five-slide fifth wheel with a front-living layout, a full loft above the rear area, and a design built for versatility and comfort on campground trips.

The central zone offers a roomy gathering area with seating and an entertainment center topped with a large flat-screen TV — a comfortable spot for campers who want space to relax after a day outdoors. The kitchen features a kitchen island, stainless-steel appliances, a 17 cu ft 12-V refrigerator, solid-surface countertops, pantry storage, and ample cabinetry — ideal for preparing meals and storing supplies while on the road. 

The private rear bedroom includes a king-bed slide, wardrobe storage, and prep for washer/dryer hookups a plus for longer stays or families needing extra convenience.

The loft above the rear part of the “loft & half” floorplan adds extra sleeping or storage capacity, making this unit great for larger groups or families traveling together. 

Construction and utility features include an automatic electric level-up system, 7,000-lb axles with anti-lock braking, a tankless on-demand water heater, fully enclosed underbelly, and generous water and waste capacities. 

This fifth wheel gives campers a versatile layout, real kitchen convenience, extra sleeping capacity, and dependable construction — a great choice for campground plans. Available now at Tri-Am RV Center.

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