2027 Keystone Fuzion373

Keystone publishes three weights for the Fuzion 373: a shipping weight of 15,890 lb, a carrying capacity of 3,855 lb and a hitch weight of 3,745 lb. Those are Keystone’s own terms, and this page keeps them. Keystone does not call the first figure dry or unloaded weight, does not say the hitch figure is measured dry, and publishes no GVWR for any Fuzion floorplan, so none of the three is renamed here and no loaded rating is worked out from them. The trailer’s own federal weight label, inside the door, is the document that carries its UVW, cargo capacity and GVWR.

Tank capacities are 173 gal fresh, 104 gal gray and 104 gal waste, as Keystone lists them. Fresh water weighs about 8.3 lb per US gallon, so a full fresh tank is roughly 1,436 lb on the road before anything else is loaded. The tire size Keystone lists is 215/75R17.5J; a fifth wheel puts its pin load into the truck bed, so it counts against the truck’s payload rather than its tow rating.

Against the 5 Fuzion floorplans profiled here, this one is the 1st by Keystone’s shipping weight, in a range from 15,890 lb (373) to 17,540 lb (432). Every figure in that comparison comes from the same Keystone page type for the same model year, so the comparison inside the series is like for like.

Every number on this page was read on 5 Nov 2026 from Keystone’s own floorplan page for the Fuzion 373. That page carries no model year, so the year comes from the roster page that links it, which lists the Fuzion floorplans under the heading “2027 Floorplans” (this floorplan sits beyond the cards the page renders, and the heading’s own count equals the roster’s full list of floorplan pages). Keystone notes that its website reflects the most recent production run and that features and specifications change during the year.

How the 373 differs from the other four Fuzion floorplans. Most distinctive first. How these ranks are worked out.

• Shipping weight (Keystone’s term), 15,890 lb: lightest of five; next is the 442 (17,040 lb).
• Hitch weight as Keystone lists it, 3,745 lb: lightest of five; next is the 419 (3,770 lb).
• Hitch weight as a share of shipping weight, 23.6%: largest of five; next is the 432 (23.1%).
• Length, 39 ft 6 in: shortest of five; next is the 419 (44 ft 6 in).
• Carrying capacity (Keystone’s term), 3,855 lb: third-smallest of five, between the 440 (3,510 lb) and the 419 (3,929 lb).

Next to the 442, the nearest heavier floorplan by shipping weight, the 373 is 1,150 lb lighter by shipping weight, has 105 lb less carrying capacity, has a hitch weight 40 lb lighter, is 7 ft 2 in shorter and sleeps one fewer; the two publish the same exterior height, fresh tank and grey tank.

Keystone lists 6 Fuzion floorplans for 2027. 5 have a complete Keystone figure set and no existing page here, and are profiled, from 15,890 lb to 17,540 lb shipping weight; the others are catalogued on this page with the reason against each. Keystone publishes shipping weight, carrying capacity and hitch weight for these trailers, and no GVWR.