2026 Forest River XLR Boost286B

The XLR Boost 286B leaves Forest River's factory at 9,094 lbs dry with 5,000 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 102-gallon fresh tank spends 847 lbs of the 5,000 lbs before anything else goes in.

Pin weight is 2,090 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: 140 gallons of grey and black capacity against 102 gallons of fresh water, so fresh water runs out first (tank sizes by length).

Against the rest of the XLR Boost fifth-wheel roster this is the 1st of 5 fifth wheels by dry weight, in a line that runs from 9,094 lbs to 13,074 lbs. It is the lightest fifth wheel in the line, which makes it the one to look at first if the tow vehicle is the constraint.

Plan the tow on loaded weight, not the 9,094 lbs dry figure: half the published cargo capacity brings this plan to about 11,594 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 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. 286B is a XLR Boost designation and this site does not decode it into a layout claim.

How the 286B differs from the other four XLR Boost fifth wheels. Most distinctive first. Sibling pages may cover other model years than this one (2026). How these ranks are worked out.

• Dry weight, 9,094 lb: lightest of five; next is the 310BX (11,519 lb).
• Pin weight, 2,090 lb: lightest of five; next is the 375BX (2,620 lb).
• Length, 31 ft 4 in: shortest of five; next is the 310BX (36 ft 2 in).
• Exterior height, 13 ft 4 in: lowest of five; next are the 310BX, 363BX and 375BX (13 ft 5 in).
• Fresh tank, 102 gal: smallest of five; next are the 310BX, 363BX and two others (150 gal).
• Grey tank, 108 gal: smallest of five; next are the 310BX, 363BX and two others (114 gal).
• Black tank, 32 gal: smallest of five; next are the 310BX, 363BX and two others (40 gal).
• Pin weight as a share of dry weight, 23%: second-smallest of five, between the 375BX (21.9%) and the 363BX (23.2%).
• Cargo capacity, 5,000 lb: third-smallest of five, between the 363BX (4,731 lb) and the 310BX (5,191 lb).

Next to the 310BX (2027 page), the nearest heavier floorplan by dry weight, the 286B is 2,425 lb lighter by dry weight, has 191 lb less cargo capacity, has a pin weight 620 lb lighter, is 4 ft 10 in shorter, stands 1 in lower, has a fresh tank 48 gal smaller, has a grey tank 6 gal smaller and has a black tank 8 gal smaller.

XLR Boost is the hardest of Forest River's toy-hauler rosters to read from the outside, for two reasons. It mixes classes: three published floorplans are XLR Boost travel trailers at 6,758 to 8,393 lb dry with 1,175 to 1,500 lb on the tongue, and three are XLR Boost or XLR Boost X fifth wheels at 9,094 to 13,074 lb dry with 2,090 to 3,220 lb on the pin. And Forest River publishes no GVWR for any of the eleven plans, so the loaded figure that determines whether a given truck can legally tow a given plan is not available from the factory in this channel. Cargo capacity is published, 2,507 to 5,300 lb, and dry weight is published, so what the roster tells you is what the trailer weighs empty and how much it will carry - not what it may weigh when full.

A full 102-gallon fresh tank is about 847 lb of water, 17% of the 286B’s 5,000 lb cargo capacity, leaving 4,153 lb. Across 5 XLR Boost fifth-wheel floorplans the water share runs 17% to 27%, and this plan’s is the lowest. Nearest on that share: XLR Boost 366BX at 23%.