Forest River Berkshire XL 40D

Name: Forest River Berkshire XL 40D
Brand: Forest River

Class Abuilt 2019–25Mixed build tierFindable on the used market

WHAT ONE COSTS

$368,800est. used (2025, 1 yr old)

Sticker was $512,222 in 2025. Out of production since 2025, so the used market is the only way to buy one. Estimate assumes a 2025 unit.

THE SPECS

Length41.0 ft

Height (incl. A/C)12.8 ft

Width8.3 ft

GVWR38,320 lb

Dry weightnot published

Sleeps8

Slide-outs4

Fresh water103 gal

Grey water66 gal

Black water42 gal

Air conditioning45,000 BTU

Awning18 ft

Fuel100 gal

Generator10 kW Onan diesel generator

A missing row means the maker never published that figure: unknown, not zero.

WHERE PEOPLE SLEEP

1× King bed in bedroom slide, motorized Tilt-a-View(Permanent)72×80
2× Bunks(Permanent)—
1× Sofa bed(Convertible)—
1× Free-standing dinette option with hutch and four chairs(Convertible)—

HOW IT'S BUILT: 4/5

WallsAzdel composite

FrameSteel

RoofStandard

UnderbellyEnclosed

Forest River (Mixed tier): Forest River

YEAR BY YEAR: WHAT CHANGED

2019Introduced
2025Final model year

FINDING ONE

Findable: a few listed nationwide most weeks. Why: Forest River is a volume manufacturer. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

Four-slide XL bunkhouse rated for eight; dropped after 2025.

OTHER BERKSHIRE FLOORPLANS

34B · 32,400 lb · sleeps 5 34QS · 32,400 lb · sleeps 7 360FWS · 28,000 lb · sleeps 4 360QS · 28,000 lb · sleeps 5 38A · 33,350 lb · sleeps 5 390BH · 27,910 lb · sleeps 6 390QS · 28,000 lb · sleeps 5 390RB · 27,910 lb · sleeps 5 39A · 33,400 lb · sleeps 5 39B · 33,400 lb · sleeps 7 400BH · 29,500 lb · sleeps 5 40F · 37,320 lb · sleeps 7 XL 37A · 38,320 lb · sleeps 4 XL 37B · 38,320 lb · sleeps 6 the whole line →

Find one for sale

Live listings for the XL 40D on the big marketplaces. Each search opens pre-filled with this exact floorplan:

RV Trader ↗Camping World ↗FB Marketplace ↗Google ↗

Inventory varies by site and day. Slim pickings? search the whole Berkshire line ↗

Is the XL 40D your #1, or just a spec sheet?

These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about. Set your priorities as sliders, switch on your hard limits, and watch the whole market re-rank around them. Every exclusion explained, every margin shown.

See where it ranks for you →

Data compiled from manufacturer spec sheets, retrieved 2026-07.