2027 KZ Sportster X3018X

KZ lists the 2027 Sportster X 3018X at 11,560 lb unloaded (UVW), with a GVWR of 16,000 lb, a cargo carrying capacity of 4,440 lb and a dry hitch weight of 2,330 lb. Its UVW plus its cargo capacity comes to exactly its GVWR.

It is 35' 7" long and 13' 5" high with the air conditioner, with 100 gal fresh, 50 gal grey and 50 gal black tanks. Fresh water weighs about 8.3 lb per US gallon, so a full fresh tank uses roughly 830 lb of the cargo capacity before anything else is loaded.

Among the 7 Sportster X floorplans KZ lists for 2027 with a published weight, it is number 5 by unloaded weight, in a range from 7,080 lb (20X) to 14,620 lb (3914X). Every figure in that comparison is KZ’s, for the same model year.

Every number on this page was read on 5 Nov 2026 from KZ’s own floorplan page for the Sportster X 3018X, whose floorplan drawing KZ labels 2027. KZ notes that its UVW reflects a rolling average for the model and that your trailer will vary with optional equipment.

How the 3018X differs from the other six Sportster X floorplans. Most distinctive first. How these ranks are worked out.

• Cargo capacity, 4,440 lb: second-largest of seven, between the 26X (4,220 lb) and the 3914X (5,380 lb).
• Dry tongue weight as a share of dry weight, 20.2%: second-largest of seven, between the 3411X (18.6%) and the 3914X (20.8%).
• Dry weight, 11,560 lb: third-heaviest of seven, between the 33X (10,300 lb) and the 3411X (13,560 lb).
• Cargo capacity as a share of GVWR, 27.8%: third-smallest of five, between the 3914X (26.9%) and the 20X (29.2%).
• Dry tongue weight, 2,330 lb: third-heaviest of seven, between the 33X (1,710 lb) and the 3411X (2,520 lb).
• Black tank, 50 gal: third-largest of seven, between the 22X, 26X and 33X (40 gal) and the 3411X and 3914X (88 gal).
• Length, 35 ft 7 in: fourth-shortest of seven, between the 26X (32 ft 1 in) and the 33X (38 ft 9 in).
• GVWR, 16,000 lb: shared with the 3411X; of seven, four lower and one higher, nearest the 33X (13,260 lb) and the 3914X (20,000 lb).
• Exterior height, 13 ft 5 in: tallest of seven, level with the 3411X and 3914X; next are the 20X, 22X and two others (12 ft 6 in).
• Interior height, 8 ft 6 in: tallest of seven, level with the 3411X and 3914X; next are the 20X, 22X and two others (7 ft 7 in).
• Fresh tank, 100 gal: largest of seven, level with the 3411X and 3914X; next are the 20X, 22X and two others (94 gal).
• Grey tank, 50 gal: shared with the 3411X and 3914X; of seven, two smaller and two larger, nearest the 20X and 26X (38 gal) and the 22X and 33X (76 gal).

Next to the 33X, the nearest lighter floorplan by dry weight, the 3018X is 1,260 lb heavier by dry weight, has a GVWR 2,740 lb higher, has 1,300 lb more cargo capacity, has a dry tongue weight 620 lb heavier, is 3 ft 2 in shorter, stands 11 in taller, has 11 in more interior height, has a fresh tank 6 gal larger, has a grey tank 26 gal smaller and has a black tank 10 gal larger; the two publish the same sleeping capacity.

Next to the 3411X, the nearest heavier floorplan by dry weight, the 3018X is 2,000 lb lighter by dry weight, has 2,000 lb more cargo capacity, has a dry tongue weight 190 lb lighter, is 4 ft 4 in shorter, has a black tank 38 gal smaller and sleeps one fewer; the two publish the same GVWR, exterior height, interior height, fresh tank and grey tank.

KZ lists 9 Sportster X floorplans for 2027; this site profiles every one with a published weight, from KZ’s own floorplan pages.

A full 100-gallon fresh tank is about 830 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 19% of the 3018X’s 4,440 lb cargo capacity, leaving 3,610 lb (602 lb per rated berth). Across 7 Sportster X floorplans the water share runs 15% to 34%, and 4 give up more than this one. Nearest on that share: Sportster X 26X at 18% and Sportster X 22X at 20%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).