2026 Forest River IBEX16MBJ

The IBEX 16MBJ has 1,497 lbs of cargo capacity between 4,088 lbs dry and its 5,585 lbs GVWR, 27% of that rating; filling its 30-gallon fresh tank at 8.3 lb a gallon uses 249 lbs of it (how to read trailer weights).

Tongue weight is 485 lbs, 12% 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: 60 gallons of grey and black capacity against 30 gallons of fresh water, so fresh water runs out first (tank sizes by length).

Against the rest of the IBEX roster this is the 4th of 16 floorplans by dry weight, in a line that runs from 3,778 lbs to 6,733 lbs. It sits in the lighter third of the line.

Plan the tow on loaded weight, not the 4,088 lbs dry figure: half the published cargo capacity brings this plan to about 4,836 lbs, and the published GVWR of 5,585 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's own description of this floorplan reads: “The 16MBJ is a compact, feature-packed travel trailer designed for couples or small families who want comfort and flexibility on the road. Just over 21 feet long, it’s easy to tow and cleverly designed for maximum space. The rear kitchen includes a two-burner cooktop and roomy fridge, while the bar-top counter with a flip-up window creates an inviting indoor-outdoor dining space. Lightweight, functional, and ready…” 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 16MBJ differs from the other fifteen IBEX floorplans. Most distinctive first. How these ranks are worked out.

• Tongue weight, 485 lb: second-lightest of sixteen, between the 16MRJ (480 lb) and the 19QRB (515 lb).
• Cargo capacity as a share of GVWR, 26.8%: third-largest of sixteen, between the 19MBH (25.1%) and the 16MKD (27.2%).
• Dry weight, 4,088 lb: fourth-lightest of sixteen, between the 16MKD (4,023 lb) and the 19QRB (4,168 lb).
• Tongue weight as a share of dry weight, 11.9%: fourth-smallest of sixteen, between the 26BRE (11.3%) and the 19QRB (12.4%).
• GVWR, 5,585 lb: fifth-lowest of sixteen, between the 16MRJ (5,580 lb) and the 19MBH (5,984 lb).
• Cargo capacity, 1,497 lb: fifth-smallest of sixteen, between the 23MBH (1,492 lb) and the 16MKD, 19BRK and eight others (1,500 lb).
• Length, 21 ft 8 in: shared with the 16MKD; of sixteen, two shorter and twelve longer, nearest the 16MKS (20 ft 6 in) and the 19QRB (24 ft 2 in).
• Exterior height, 10 ft 10 in: shared with the 16MKD, 16MRJ and 19QRB; of sixteen, three lower and nine taller, nearest the 19BRK, 19MBH and 19MSB (10 ft 9 in) and the 16MKS, 20FKDS and seven others (11 ft 3 in).
• Fresh tank, 30 gal: smallest of sixteen, level with the 16MKD, 16MRJ and four others; next are the 16MKS, 20FKDS and seven others (40 gal).
• Grey tank, 30 gal: smallest of sixteen, level with the 16MKD, 16MRJ and five others; next are the 16MKS, 20MDS and three others (40 gal).

Next to the 16MKD, the nearest lighter floorplan by dry weight, the 16MBJ is 65 lb heavier by dry weight, has a GVWR 62 lb higher, has 3 lb less cargo capacity and has a tongue weight 85 lb lighter; the two publish the same length, exterior height, fresh tank, grey tank and black tank.

Next to the 19QRB, the nearest heavier floorplan by dry weight, the 16MBJ is 80 lb lighter by dry weight, has a GVWR 670 lb higher, has 750 lb more cargo capacity, has a tongue weight 30 lb lighter and is 2 ft 6 in shorter; the two publish the same exterior height, fresh tank, grey tank and black tank.

IBEX is Forest River's lightweight four-season travel trailer, built at the company's Outdoors RV-adjacent end of the travel-trailer range rather than in the value tier. The roster runs from a 16-foot single-axle at under 4,100 lb dry to a tandem-axle 26-footer. Forest River publishes a full weight and capacity block for every floorplan, which is why this line could be catalogued completely rather than partially.

A full 30-gallon fresh tank is about 249 lb of water (water counts as cargo: 49 CFR 571.110 S9.3.2), 17% of the 16MBJ’s 1,497 lb cargo capacity, leaving 1,248 lb. Across 16 IBEX floorplans the water share runs 14% to 36%, and 11 give up more than this one. Nearest on that share: IBEX 16MKD at 17% and IBEX 19MSB at 20%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.110 S9.3.3).