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Travel Trailer · Wide Body · Factory-Source Profile

2027 Forest River Rockwood Signature8391FK

a 38-foot travel trailer that leaves the factory at 10,409 lbs dry and is rated to carry 2,087 lbs of cargo.

Tow-Critical Data — as built, MY2027

10,409lb
Dry Weight
2,087lb
Cargo Capacity
1,385lb
Tongue Weight
38ft
Length
2,087 lb cargo Travel Trailer · Signature Travel Trailers Built by · Forest River Model year · 2027

01 What makes it unique

The Rockwood Signature 8391FK leaves Forest River's factory at 10,409 lbs dry with 2,087 lbs of cargo capacity. Forest River publishes no GVWR for this line, so the loaded rating is not quoted on this page and is not computed from the other two figures. What the cargo number covers is defined by the factory: fresh water, gear, food, batteries and every dealer-installed accessory come out of it. Fresh water is 8.3 lb per gallon, so filling the 54-gallon fresh tank spends 448 lbs of the 2,087 lbs before anything else goes in.

Tongue weight is 1,385 lbs, 13% of the dry weight as published; it rises as the trailer is loaded and counts against the tow vehicle’s tongue-weight and payload limits (tongue weight by size).

Off hookups: 184 gallons of grey and black capacity against 54 gallons of fresh water, so fresh water runs out first (tank sizes by length).

Against the rest of the Rockwood Signature roster this is the 11th of 12 floorplans by dry weight, in a line that runs from 7,709 lbs to 11,259 lbs. It sits in the heavier third of the line.

Plan the tow on loaded weight, not the 10,409 lbs dry figure: half the published cargo capacity brings this plan to about 11,453 lbs. Forest River publishes no loaded rating for this line, so the ceiling is the one on the trailer’s own weight label (how to read trailer weights).

Forest River’s line listing and this floorplan’s own factory page agree on all 4 shared figures. No GVWR is published for this line, so dry plus cargo has no rating to check against. A missing row means Forest River does not publish that figure (how figures are verified).

Forest River's own description of this floorplan reads: “Wide-body front kitchen layout with large front window, island, residential appliances, and plenty of countertop space. Flexible dining with sliding table and flip-out leaf. Living area includes theater seating, fireplace, and entertainment center. Private rear bedroom offers a king bed, large wardrobe, and washer/dryer prep. Spacious bath features a one-piece fiberglass shower, porcelain toilet, and ample linen…” That is the factory's marketing copy rather than a specification, and nothing in it is treated as a verified field on this page - layout descriptions, sleeping arrangements and feature claims in factory copy are not carried into the spec table unless the factory also publishes them as specifications.

How the 8391FK differs from the other eleven Rockwood Signature floorplans. Most distinctive first. Sibling pages may cover other model years than this one (2027). How these ranks are worked out.

  • Dry weight, 10,409 lb: second-heaviest of twelve, between the 8393RK (10,319 lb) and the 8421DB (11,259 lb).
  • Tongue weight, 1,385 lb: heaviest of twelve, level with the 8421DB; next is the 8336BH (1,376 lb).
  • Tongue weight as a share of dry weight, 13.3%: fifth-largest of twelve, between the 8329SB (12.8%) and the 8263MBR (13.6%).
  • Cargo capacity, 2,087 lb: sixth-smallest of twelve, between the 8393RK (2,082 lb) and the 8392RL (2,092 lb).
  • Length, 38 ft 8 in: shared with the 8392RL and 8393RK; of twelve, eight shorter and one longer, nearest the 8324SB, 8329SB and four others (36 ft 8 in) and the 8421DB (41 ft 10 in).
  • Exterior height, 12 ft: tallest of twelve, level with the 8392RL, 8393RK and 8421DB; next are the 8262RBS, 8263MBR and six others (11 ft 7 in).
  • Grey tank, 131 gal: largest of twelve, level with the 8336BH, 8392RL and two others; next is the 8335SB (130 gal).
  • Black tank, 53 gal: shared with the 8336BH, 8392RL and 8393RK; of twelve, seven smaller and one larger, nearest the 8324SB, 8329SB and three others (50 gal) and the 8421DB (106 gal).

Next to the 8393RK, the nearest lighter floorplan by dry weight, the 8391FK is 90 lb heavier by dry weight, has 5 lb more cargo capacity and has a tongue weight 215 lb heavier; the two publish the same length, exterior height, fresh tank, grey tank and black tank.

Next to the 8421DB, the nearest heavier floorplan by dry weight, the 8391FK is 850 lb lighter by dry weight, has 39 lb less cargo capacity, is 3 ft 2 in shorter and has a black tank 53 gal smaller; the two publish the same tongue weight, exterior height, fresh tank and grey tank.

02 Full specifications

Dimensions

Exterior length
38' 8"
Exterior height
12' 0"
Exterior width
100"

Weights

Dry / unit base weight (UVW)
10,409 lbs
GVWR (max loaded)
Not published by Forest River for this line
Net cargo / payload (CCC)
2,087 lbs
Hitch / tongue weight
1,385 lbs

Capacities

Fresh water
54 gal
Grey water
131 gal
Black water
53 gal

Running gear

Hitch type
Bumper pull
Axles
Not published by Forest River
Tires
Not published by Forest River

Sleeping & layout

Sleeps
Not published by Forest River
Awnings
19' & 11'

How these published figures sit against the rest of the catalogue: travel trailer tongue weight by size; fresh, grey and black tank sizes; camper trailer size chart.

Drawn to scale

Size, with end view

Scale outline of the 8391FKScale outline of the 8391FK. Overall length 38' 8", overall height 12' 0", overall width 8' 4".end view8' 4"38' 8" overall length12' 0"

Holding tanks

Holding tank capacities for the 8391FKHolding tank capacities: fresh 54 gallons, grey 131 gallons, black 53 gallons.Fresh54 galGrey131 galBlack53 gal

Axles, wheels and nose shape are schematic; not a floorplan. Data: dataset.

03 The Rockwood Signature floorplan family

Signature is a travel trailer with fifth-wheel numbers. Dry weight across the five plans runs 9,858 to 11,259 lb and tongue weight runs 1,170 to 1,385 lb -- tongue figures to check against your hitch and truck ratings. Cargo capacity runs 1,518 to 2,126 lb, which is a smaller payload allowance than the lighter Ultra Lite plans offer despite roughly 3,000 lb more trailer. What the size buys instead is waste capacity: grey is 131 gallons on every plan and black runs 53 to 106, against 54 gallons of fresh throughout.

FloorplanNominalDry weight (lb)Cargo, CCC (lb)Notable
8336BH36' 8"9,8581,518Signature Travel Trailers
8392RL38' 8"10,3042,092Signature Travel Trailers
8393RK38' 8"10,3192,082Signature Travel Trailers
8391FK38' 8"10,4092,087Signature Travel Trailers
8421DB41' 10"11,2592,126Signature Wide Body Travel Trailers

Signature is the heaviest Rockwood travel-trailer grouping and the factory files its five 2027 floorplans under two headings, Signature Travel Trailers and Signature Wide Body Travel Trailers. All five publish dry weight, cargo capacity, tongue weight, all three exterior dimensions and all three tank capacities, and all five carry a factory floorplan description. No plan in the grouping publishes a GVWR, so loaded rating is shown as not published and is never derived. Forest River also builds a Signature fifth-wheel roster of eleven floorplans, which is catalogued separately and is not part of this travel-trailer grouping.

04 Notes on this floorplan

What Forest River does not publish for this line

Sleeping capacity, axle count, tire size and MSRP are not in Forest River’s specification channel for Rockwood Signature, so this page does not publish them and does not estimate them (how figures are verified).

There is no factory GVWR for this trailer

Forest River publishes dry weight, cargo capacity and tongue weight for every Rockwood Signature floorplan and publishes no GVWR for any of them. The factory's own glossary defines cargo capacity as GVWR minus UVW, which means the rating can be worked out - and a figure you worked out is not a figure the manufacturer published, so this page does not print one. Use the weight label on the trailer itself, which every Forest River unit carries.

Weigh it before you tow it

Forest River calls its unloaded weight an estimated average for a standard build, and options and dealer add-ons change it, so weigh your own trailer loaded the way you travel (how figures are verified).

05 How it compares

Lighter
Rockwood Signature 8393RK

10,319 lbs dry against this plan's 10,409 lbs, a difference of 90 lbs.

Heavier
Rockwood Signature 8421DB

11,259 lbs dry, 850 lbs more than this plan, and 2,126 lbs of cargo capacity against this one's 2,087 lbs.

Most cargo in the line
Rockwood Signature 8335SB

2,730 lbs of cargo capacity, the highest of the 12 Rockwood Signature floorplans profiled here. If payload rather than length is the binding constraint, that is the plan to compare against.

06 Loading it for a trip

A full 54-gallon fresh tank is about 448 lb of water, 21% of the 8391FK’s 2,087 lb cargo capacity, leaving 1,639 lb. Across 12 Rockwood Signature floorplans the water share runs 16% to 30%, and 5 give up more than this one. Nearest on that share: Rockwood Signature 8392RL at 21% and Rockwood Signature 8393RK at 22%.

07 Where this floorplan sits

Closest sibling: the Rockwood Signature 8392RL, nearest on the published figures. It differs on 3 of the 7 fields both publish (this plan first): dry weight 10,409 lb vs 10,304 lb; cargo capacity 2,087 lb vs 2,092 lb; hitch weight 1,385 lb vs 1,305 lb. They match on length, fresh tank, grey tank and black tank.

Rockwood Signature plansThis planPosition, low to highRange
Dry weight (lb)10,40911 of 127,709–11,259
Cargo capacity (lb)2,0876 of 121,518–2,730
Hitch weight (lb)1,38511–12 of 121,057–1,385
Length38 ft 8 in9–11 of 1229 ft 11 in–41 ft 10 in
Grey tank (gal)1318–12 of 1280–131
Black tank (gal)538–11 of 1240–106

Either side of it by dry weight: Rockwood Signature 8393RK is 90 lb lighter (10,319 lb dry); Rockwood Signature 8421DB is 850 lb heavier (11,259 lb dry).

Nearest Rockwood Signature siblingsLengthSleepsDry (lb)GVWR (lb)CCC (lb)Hitch (lb)Fresh (gal)
Rockwood Signature 8391FK38 ft 8 in—10,409—2,0871,38554
Rockwood Signature 8392RL38 ft 8 in—10,304—2,0921,30554
Rockwood Signature 8393RK38 ft 8 in—10,319—2,0821,17054
Rockwood Signature 8337RL36 ft 8 in—9,209—2,1061,31554
Rockwood Signature 8336BH36 ft 8 in—9,858—1,5181,37654
Rockwood Signature 8324SB36 ft 8 in—9,254—1,8611,11554

All 12 Rockwood Signature floorplans: Rockwood Signature line hub.

Other lines, nearest by dry weightGVWR (lb)Dry (lb)SleepsLength
8391FK—10,409—38 ft 8 in
Puma Vista 38DEN12,43410,434—40 ft 6 in
Jay Flight 401FLTS12,00010,355440 ft 4 in
Alta 3250KXT—10,334—38 ft 5 in
Eagle 332CBOK11,99510,490639 ft 11 in
Aurora Destination Series 39FLTS11,82310,323—42 ft 11 in
Zinger 390DB—10,517843 ft 1 in

Against the 8391FK: the Puma Vista 38DEN is 25 lb heavier and 2 ft longer; the Jay Flight 401FLTS is 54 lb lighter and 2 ft longer; the Alta 3250KXT is 75 lb lighter.

08 Common questions about the 8391FK

How much can the 8391FK carry?

2,087 lb. A full fresh tank uses 448 lb of it.

What is the tongue weight of the 8391FK?

1,385 lb as published, 13% of the dry weight (median across 1,205 travel trailers here: 12%).

What are the tank capacities on the 8391FK?

Fresh 54, grey 131, black 53 gallons. Off hookups, fresh water runs out first.

How long is the 8391FK?

38' 8" overall, tongue or pin box included.

From the figures above.

09 What this page publishes, and what it does not

10 of the 18 fields this catalogue tracks are published for the 8391FK. Not published: GVWR, interior height, sleeps, slide count, axle count, tire specification, refrigerator, air conditioning.

Sourcing rules: methodology.

11 NHTSA safety record

NHTSA holds 35 recall campaigns and 173 owner complaints (model years 2005 on) against the Rockwood & Flagstaff line (a recall and a complaint are not the same thing).

What to look at on a used one. Across the 173 complaints filed on this line the most-reported components are tires (22%), structure (17%) and wheels (17%).

Recall coverage here is not complete, and complaints are owners’ unverified reports (how this record is built). Check a specific VIN at NHTSA before you buy. Full tables are on the Rockwood & Flagstaff line page.