2027 Keystone Sprout15RBS

Keystone publishes three weights for the Sprout 15RBS: a shipping weight of 3,375 lb, a carrying capacity of 1,000 lb and a hitch weight of 375 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 Sprout 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 37 gal fresh, 27 gal gray and 27 gal waste, as Keystone lists them. Fresh water weighs about 8.3 lb per US gallon, so a full fresh tank is roughly 307 lb on the road before anything else is loaded. The tire size Keystone lists is ST235/75R15D.

Against the 3 Sprout floorplans profiled here, this one is the 2nd by Keystone’s shipping weight, in a range from 2,950 lb (13RKS) to 4,010 lb (18RBS). 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 Sprout 15RBS. That page carries no model year, so the year comes from the roster page that links it, which lists the Sprout 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 15RBS differs from the other two Sprout floorplans. Most distinctive first. How these ranks are worked out.

• Hitch weight as a share of shipping weight, 11.1%: smallest of three; next is the 18RBS (11.3%).
• Shipping weight (Keystone’s term), 3,375 lb: second-lightest of three, between the 13RKS (2,950 lb) and the 18RBS (4,010 lb).
• Carrying capacity (Keystone’s term), 1,000 lb: second-smallest of three, between the 18RBS (845 lb) and the 13RKS (1,250 lb).
• Hitch weight as Keystone lists it, 375 lb: second-lightest of three, between the 13RKS (345 lb) and the 18RBS (455 lb).
• Length, 19 ft 11 in: second-shortest of three, between the 13RKS (17 ft 4 in) and the 18RBS (22 ft 8 in).

Next to the 13RKS, the nearest lighter floorplan by shipping weight, the 15RBS is 425 lb heavier by shipping weight, has 250 lb less carrying capacity, has a hitch weight 30 lb heavier and is 2 ft 7 in longer; the two publish the same exterior height, fresh tank, grey tank and sleeping capacity.

Next to the 18RBS, the nearest heavier floorplan by shipping weight, the 15RBS is 635 lb lighter by shipping weight, has 155 lb more carrying capacity, has a hitch weight 80 lb lighter, is 2 ft 9 in shorter and sleeps one fewer; the two publish the same exterior height, fresh tank and grey tank.

Keystone lists 4 Sprout floorplans for 2027. 3 have a complete Keystone figure set and no existing page here, and are profiled, from 2,950 lb to 4,010 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.