2027 Keystone Alpine Avalanche Edition379MB

Keystone publishes three weights for the Alpine Avalanche Edition 379MB: a shipping weight of 14,640 lb, a carrying capacity of 2,340 lb and a hitch weight of 2,980 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 Alpine Avalanche Edition 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 75 gal fresh, 83 gal gray and 49 gal waste, as Keystone lists them. Fresh water weighs about 8.3 lb per US gallon, so a full fresh tank is roughly 622 lb on the road before anything else is loaded. The tire size Keystone lists is ST235/80R16G; 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 6 Alpine Avalanche Edition floorplans profiled here, this one is the 4th by Keystone’s shipping weight, in a range from 12,200 lb (321RL) to 15,695 lb (381DL). 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 4 Nov 2026 from Keystone’s own floorplan page for the Alpine Avalanche Edition 379MB. That page carries no model year, so the year comes from the roster page that links it, which lists the Alpine Avalanche Edition floorplans under the heading “2027 Floorplans”. Keystone notes that its website reflects the most recent production run and that features and specifications change during the year.

How the 379MB differs from the other five Alpine Avalanche Edition floorplans. Most distinctive first. How these ranks are worked out.

• Carrying capacity (Keystone’s term), 2,340 lb: second-largest of six, between the 381DL (2,305 lb) and the 321RL (2,800 lb).
• Shipping weight (Keystone’s term), 14,640 lb: third-heaviest of six, between the 380LT (14,508 lb) and the 390DS (14,700 lb).
• Hitch weight as Keystone lists it, 2,980 lb: third-heaviest of six, between the 366LS (2,625 lb) and the 390DS (3,000 lb).
• Length, 41 ft 11 in: third-shortest of six, between the 366LS (40 ft 10 in) and the 380LT (42 ft 4 in).
• Hitch weight as a share of shipping weight, 20.4%: largest of six, level with the 390DS; next is the 381DL (19.9%).
• Sleeping capacity, 8: largest of six, level with the 380LT and 390DS; next are the 366LS and 381DL (6).

Next to the 380LT, the nearest lighter floorplan by shipping weight, the 379MB is 132 lb heavier by shipping weight, has 348 lb more carrying capacity, has a hitch weight 375 lb heavier and is 5 in shorter; the two publish the same exterior height, fresh tank, grey tank and sleeping capacity.

Next to the 390DS, the nearest heavier floorplan by shipping weight, the 379MB is 60 lb lighter by shipping weight, has 40 lb more carrying capacity, has a hitch weight 20 lb lighter, is 11 in shorter and has a grey tank 49 gal smaller; the two publish the same exterior height, fresh tank and sleeping capacity.

Keystone lists 7 Alpine Avalanche Edition floorplans for 2027. 6 have a complete Keystone figure set and no existing page here, and are profiled, from 12,200 lb to 15,695 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.