2026 Forest River Sandstorm / Stealth / Shockwave3513GX

The Sandstorm 3513GX has 3,281 lbs of cargo capacity between 13,969 lbs dry and its 17,250 lbs GVWR, 19% of that rating; filling its 150-gallon fresh tank at 8.3 lb a gallon uses 1,245 lbs of it (how to read trailer weights).

Pin weight is 3,250 lbs, 23% of the dry weight as published; it rises as the trailer is loaded and comes off the truck’s payload, not its towing rating, so check it against the payload on your own door sticker (pin weight and payload).

Off hookups: 200 gallons of grey and black capacity against 150 gallons of fresh water, so fresh water runs out first (tank sizes by length).

Against the rest of the Sandstorm fifth-wheel roster this is the 5th of 7 fifth wheels by dry weight, in a line that runs from 9,459 lbs to 15,749 lbs. It sits in the heavier third of the line.

Plan the tow on loaded weight, not the 13,969 lbs dry figure: half the published cargo capacity brings this plan to about 15,609 lbs, and the published GVWR of 17,250 lbs is the limit (how to read trailer weights).

Forest River’s line listing and this floorplan’s own factory page agree on all 4 shared figures. Dry weight plus cargo capacity equals the published GVWR exactly. A missing row means Forest River does not publish that figure (how figures are verified).

Forest River publishes no floorplan description for this plan in the channel this page is built from - only the numeric specification block. Rather than describe a layout from the floorplan code, which would be a guess dressed as a fact, this page carries what the factory publishes and says where it stops. 3513GX is a Sandstorm designation and this site does not decode it into a layout claim.

How the 3513GX differs from the other six Sandstorm fifth wheels. Most distinctive first. How these ranks are worked out.

• Cargo capacity, 3,281 lb: smallest of seven; next is the 3217GX (4,036 lb).
• Cargo capacity as a share of GVWR, 19%: smallest of seven; next is the 3217GX (23.5%).
• Dry weight, 13,969 lb: third-heaviest of seven, between the 3217GX (13,124 lb) and the 4017GX (15,674 lb).
• GVWR, 17,250 lb: third-highest of seven, between the 3217GX (17,160 lb) and the 4017GX and 4114GX (21,000 lb).
• Pin weight, 3,250 lb: third-heaviest of seven, between the 3217GX (3,160 lb) and the 4114GX (3,360 lb).
• Length, 40 ft 5 in: third-longest of seven, between the 3217GX (38 ft 4 in) and the 4017GX (45 ft).
• Pin weight as a share of dry weight, 23.3%: fourth-smallest of seven, between the 2710 (22.9%) and the 3300 (23.5%).
• Black tank, 80 gal: largest of seven, level with the 4017GX; next are the 2710, 2800 and two others (40 gal).

Next to the 3217GX, the nearest lighter floorplan by dry weight, the 3513GX is 845 lb heavier by dry weight, has a GVWR 90 lb higher, has 755 lb less cargo capacity, has a pin weight 90 lb heavier, is 2 ft 1 in longer and has a black tank 40 gal larger; the two publish the same exterior height, fresh tank and grey tank.

Next to the 4017GX, the nearest heavier floorplan by dry weight, the 3513GX is 1,705 lb lighter by dry weight, has a GVWR 3,750 lb lower, has 2,045 lb less cargo capacity, has a pin weight 515 lb lighter and is 4 ft 7 in shorter; the two publish the same exterior height, fresh tank, grey tank and black tank.

Sandstorm is a toy-hauler roster published under three badges at once, and the first useful thing to know about it is that Sandstorm, Stealth and Shockwave are the same sixteen trailers. Not similar - the same floorplan codes, the same dry weights, the same cargo capacities, the same tanks, checked field by field. So a shopper cross-shopping the three badges is cross-shopping one product, and the choice between them is a dealer question rather than a trailer question. Within that roster there are two real classes. Five plans are travel trailers, 7,439 to 9,399 lb dry with 1,155 to 1,855 lb on the tongue. Seven are fifth wheels, 9,459 to 15,749 lb dry with 2,165 to 3,765 lb on the pin. The lightest fifth wheel outweighs the heaviest bumper pull, so the two halves do not overlap and no plan here is a borderline call. Cargo capacity runs 3,281 to 5,676 lb on the fifth wheels and 3,771 to 5,300 lb on the travel trailers - the bumper pulls give up very little payload, which is unusual and is the reason to read the table rather than assume the fifth wheels carry more.

A full 150-gallon fresh tank is about 1,245 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 38% of the 3513GX’s 3,281 lb cargo capacity, leaving 2,036 lb. Across 7 Sandstorm fifth-wheel floorplans the water share runs 22% to 38%, and this plan’s is the highest. Nearest on that share: Sandstorm 3217GX at 31%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).