2027 Keystone Alpine3910RK

Keystone publishes three weights for the Alpine 3910RK: a shipping weight of 14,640 lb, a carrying capacity of 3,360 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 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 83 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 215/75R17.5H; 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 4 Alpine floorplans profiled here, this one is the 3rd by Keystone’s shipping weight, in a range from 12,925 lb (3100RE) to 15,060 lb (3710FL). 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 3910RK. That page carries no model year, so the year comes from the roster page that links it, which lists the Alpine 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 3910RK differs from the other three Alpine floorplans. Most distinctive first. How these ranks are worked out.

• Carrying capacity (Keystone’s term), 3,360 lb: largest of four; next is the 3100RE (3,075 lb).
• Length, 42 ft 10 in: longest of four; next is the 3710FL (41 ft 4 in).
• Shipping weight (Keystone’s term), 14,640 lb: second-heaviest of four, between the 3303CK (14,115 lb) and the 3710FL (15,060 lb).
• Hitch weight as Keystone lists it, 2,980 lb: second-heaviest of four, between the 3303CK (2,870 lb) and the 3710FL (3,270 lb).
• Hitch weight as a share of shipping weight, 20.4%: second-largest of four, between the 3303CK (20.3%) and the 3710FL (21.7%).
• Sleeping capacity, 6: largest of four, level with the 3710FL; next are the 3100RE and 3303CK (4).

Next to the 3303CK, the nearest lighter floorplan by shipping weight, the 3910RK is 525 lb heavier by shipping weight, has 475 lb more carrying capacity, has a hitch weight 110 lb heavier, is 5 ft 7 in longer and sleeps two more; the two publish the same exterior height, fresh tank and grey tank.

Next to the 3710FL, the nearest heavier floorplan by shipping weight, the 3910RK is 420 lb lighter by shipping weight, has 420 lb more carrying capacity, has a hitch weight 290 lb lighter, is 1 ft 6 in longer and has a grey tank 5 gal larger; the two publish the same exterior height, fresh tank and sleeping capacity.

Keystone lists 5 Alpine floorplans for 2027. 4 have a complete Keystone figure set and no existing page here, and are profiled, from 12,925 lb to 15,060 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.