01 What makes it unique
Forest River lists the 2026 Sandstorm / Stealth / Shockwave 4015GX at 16,354 lb dry, a GVWR of 21,000 lb, a net carrying capacity of 4,646 lb and a pin weight of 3,335 lb. Its dry weight plus its carrying capacity comes to exactly its GVWR.
It is 44' 6" long and 13' 4" high. Forest River prints its tanks as 150 gal fresh, 174 gal grey, 64 gal black.
Every number on this page was read on 7 Nov 2026 from Forest River’s own 2026 Sandstorm floorplan page for the Sandstorm / Stealth / Shockwave 4015GX, whose heading names the model year 2026.
How the 4015GX differs from the other nine Sandstorm fifth wheels. Most distinctive first. How these ranks are worked out.
- Dry weight, 16,354 lb: heaviest of ten; next is the 4114GX (15,749 lb).
- Pin weight as a share of dry weight, 20.4%: smallest of ten; next is the 4114GX (21.3%).
- Exterior height, 13 ft 4 in: lowest of ten; next are the 2710, 2800 and three others (13 ft 5 in).
- Grey tank, 174 gal: largest of ten; next is the 3300 (132 gal).
- Cargo capacity as a share of GVWR, 22.1%: third-smallest of ten, between the 3513GX (19%) and the 3217GX (23.5%).
- Pin weight, 3,335 lb: third-heaviest of ten, between the 3715GX (3,320 lb) and the 4114GX (3,360 lb).
- Length, 44 ft 6 in: third-longest of ten, between the 3715GX (41 ft 9 in) and the 4017GX (45 ft).
- Black tank, 64 gal: fourth-largest of ten, between the 2710, 2800 and two others (40 gal) and the 3513GX and 4017GX (80 gal).
- Cargo capacity, 4,646 lb: fifth-smallest of ten, between the 3216GX (4,041 lb) and the 4114GX (5,251 lb).
- GVWR, 21,000 lb: highest of ten, level with the 4017GX and 4114GX; next is the 3715GX (17,320 lb).
Next to the 4114GX, the nearest lighter floorplan by dry weight, the 4015GX is 605 lb heavier by dry weight, has 605 lb less cargo capacity, has a pin weight 25 lb lighter, is 1 ft 5 in shorter, stands 1 in lower, has a grey tank 54 gal larger and has a black tank 32 gal larger; the two publish the same GVWR and fresh tank.
02 Full specifications
Dimensions
- Exterior length
- 44' 6"
- Exterior height
- 13' 4"
- Exterior width
- 102"
- Interior height
- Not published by Forest River
Weights
- Dry / unit base weight (UVW)
- 16,354 lb
- GVWR (max loaded)
- 21,000 lb
- Net cargo / payload (CCC)
- 4,646 lb
- Hitch / pin weight
- 3,335 lb
Capacities
- Fresh water
- 150 gal
- Grey water
- 174 gal
- Black water
- 64 gal
Running gear
- Hitch type
- Fifth wheel (pin box)
- Tire size
- Not published by Forest River
Sleeping & layout
- Sleeps
- Not published by Forest River
- Availability (as printed)
- Forest River files this floorplan “DSO” (Dealer Stock Only): sold from dealer inventory, not orderable from the factory
- Sold under each badge (as printed)
- Forest River lists this floorplan with the same hitch weight, UVW, CCC and length on its 2026 Sandstorm, Stealth and Shockwave rosters (saved pages)
- Model year (as printed)
- page title "2026 Sandstorm 4015GX - DSO Floorplan - Forest River RV"
- Weight basis (as printed)
- UVW footnote: "*Estimated Average based on standard build optional equipment."
- Maker status (as printed)
- title suffix "- DSO"
- Awning
- 12' & 20'
How these published figures sit against the rest of the catalogue: fifth wheel pin weight and payload; fresh, grey and black tank sizes; camper trailer size chart.
Drawn to scale
Weight budget
Size, with end view
Holding tanks
Axles, wheels and nose shape are schematic; not a floorplan. Data: dataset.
Towing it
Check your vehicle. Enter the ratings from your owner’s manual and the door-pillar placard.
Compares your figures with this page’s published GVWR (21,000 lb) and the upper loaded pin estimate (5,250 lb, a rule of thumb). Your vehicle’s placard and the trailer’s own weight label govern.
Loaded range: 15–25% of GVWR on the pin, a rule of thumb, not a measurement of this unit. No truck ratings or hitch classes (why; NHTSA, DOT HS 809 433). The range starts at the published figure, because loaded is never lighter than that.
03 The Sandstorm floorplan family
The Sandstorm floorplans below were added from Forest River’s 2026 Sandstorm floorplan page; every Sandstorm floorplan on this site, every model year, is listed on the Sandstorm hub.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| Sandstorm / Stealth / Shockwave 3216GX | 37' 9" | — | Profiled |
| Sandstorm / Stealth / Shockwave 3715GX | 41' 9" | — | Profiled |
| Sandstorm / Stealth / Shockwave 4015GX | 44' 6" | — | Profiled |
The Sandstorm floorplans below were added from Forest River’s 2026 Sandstorm floorplan page; every Sandstorm floorplan on this site, every model year, is listed on the Sandstorm hub.
04 Notes on this floorplan
What Forest River does not publish for the Sandstorm / Stealth / Shockwave 4015GX
Forest River prints no tire size, interior height, sleeping capacity for this model, so none is given. Nothing is filled from a sibling model, a different model year or a dealer listing.
Read the label on the trailer
Federal rules put a load-carrying label inside every RV trailer: its unloaded weight with full propane, its cargo carrying capacity and its GVWR (49 CFR 571.110 and 571.120). Those figures come from the trailer itself and govern the towing decision.
05 How it compares
14,254 lb dry and 17,320 lb GVWR, against this model’s 16,354 lb and 21,000 lb.
06 Loading it for a trip
A full 150-gallon fresh tank is about 1,245 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 27% of the Sandstorm / Stealth / Shockwave 4015GX’s 4,646 lb cargo capacity, leaving 3,401 lb. Across 10 Sandstorm fifth-wheel floorplans the water share runs 22% to 41%, and 4 give up more than this one. Nearest on that share: Sandstorm 4114GX at 24% and Sandstorm / Stealth / Shockwave 3216GX at 31%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).
07 Where this floorplan sits
Closest sibling: the Sandstorm 4017GX, nearest on the published figures. It differs on 6 of the 8 fields both publish (this plan first): length 44 ft 6 in vs 45 ft 0 in; dry weight 16,354 lb vs 15,674 lb; cargo capacity 4,646 lb vs 5,326 lb; hitch weight 3,335 lb vs 3,765 lb; grey tank 174 gal vs 120 gal; black tank 64 gal vs 80 gal. They match on GVWR and fresh tank.
| Sandstorm fifth-wheel plans | This plan | Position, low to high | Range |
|---|---|---|---|
| GVWR (lb) | 21,000 | 8–10 of 10 | 14,759–21,000 |
| Dry weight (lb) | 16,354 | 10 of 10 | 9,459–16,354 |
| Cargo capacity (lb) | 4,646 | 5 of 10 | 3,066–5,676 |
| Hitch weight (lb) | 3,335 | 8 of 10 | 2,165–3,765 |
| Length | 44 ft 6 in | 8 of 10 | 32 ft 3 in–45 ft 11 in |
| Grey tank (gal) | 174 | 10 of 10 | 97–174 |
| Black tank (gal) | 64 | 7 of 10 | 32–98 |
Either side of it by GVWR: Sandstorm / Stealth / Shockwave 3715GX is 3,680 lb lighter (17,320 lb GVWR); Sandstorm 4017GX matches it at 21,000 lb GVWR.
| Nearest Sandstorm fifth-wheel siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| Sandstorm / Stealth / Shockwave 4015GX | 44 ft 6 in | — | 16,354 | 21,000 | 4,646 | 3,335 | 150 |
| Sandstorm 4017GX | 45 ft 0 in | — | 15,674 | 21,000 | 5,326 | 3,765 | 150 |
| Sandstorm 4114GX | 45 ft 11 in | — | 15,749 | 21,000 | 5,251 | 3,360 | 150 |
| Sandstorm 3513GX | 40 ft 5 in | — | 13,969 | 17,250 | 3,281 | 3,250 | 150 |
| Sandstorm 3217GX | 38 ft 4 in | — | 13,124 | 17,160 | 4,036 | 3,160 | 150 |
| Sandstorm / Stealth / Shockwave 3715GX | 41 ft 9 in | — | 14,254 | 17,320 | 3,066 | 3,320 | 150 |
All 15 Sandstorm floorplans: Sandstorm line hub.
| Other lines, nearest by GVWR | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| Sandstorm / Stealth / Shockwave 4015GX | 21,000 | 16,354 | — | 44 ft 6 in |
| Cyclone 3913 | 21,000 | 15,435 | 8 | 46 ft 5 in |
| Nightfall 397NHD | 21,000 | 15,674 | — | 45 ft 0 in |
| Road Warrior 391 | 21,000 | 14,599 | 8 | 44 ft 10 in |
| Seismic 395 | 21,000 | 16,075 | 7 | — |
| Torque 418 | 21,000 | 14,963 | 8 | 46 ft 8 in |
| Valor 41V13 | 21,000 | 15,950 | — | 45 ft 11 in |
Against the Sandstorm / Stealth / Shockwave 4015GX: the Cyclone 3913 is 2 ft longer.
08 Common questions about the Sandstorm / Stealth / Shockwave 4015GX
How much does the Sandstorm / Stealth / Shockwave 4015GX weigh?
16,354 lb dry; 21,000 lb GVWR, the most it may weigh loaded.
How much can the Sandstorm / Stealth / Shockwave 4015GX carry?
4,646 lb, 22% of its GVWR (median across 442 fifth wheels here: 19%). A full fresh tank uses 1,245 lb of it.
What is the pin weight of the Sandstorm / Stealth / Shockwave 4015GX?
3,335 lb as published, 20% of the dry weight (median across 686 fifth wheels here: 19%).
What size tow vehicle does the Sandstorm / Stealth / Shockwave 4015GX need?
A tow rating of at least 21,000 lb, plus payload for the loaded pin weight, passengers and cargo.
What are the tank capacities on the Sandstorm / Stealth / Shockwave 4015GX?
Fresh 150, grey 174, black 64 gallons. Off hookups, fresh water runs out first.
How long is the Sandstorm / Stealth / Shockwave 4015GX?
44' 6" overall, tongue or pin box included.
From the figures above.
09 What this page publishes, and what it does not
11 of the 18 fields this catalogue tracks are published for the Sandstorm / Stealth / Shockwave 4015GX. Not published: interior height, sleeps, slide count, axle count, tire specification, refrigerator, air conditioning.
Sourcing rules: methodology.
10 Manuals & documents
Sources: forestriverinc.com (linked below); the full source note is at the foot of the page.
11 NHTSA safety record
NHTSA holds 12 recall campaigns and 22 owner complaints (model years 2005 on) against the Sandstorm line (a recall and a complaint are not the same thing).
What to look at on a used one. Across the 22 complaints filed on this line the most-reported components are structure (27%), unknown or other (18%) and tires (14%).
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 Sandstorm line page.