2027 Keystone Sprinter3800FLB

Keystone publishes three weights for the Sprinter 3800FLB: a shipping weight of 12,775 lb, a carrying capacity of 3,225 lb and a hitch weight of 2,745 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 Sprinter 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, 78 gal gray and 78 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 9 Sprinter floorplans profiled here, this one is the 3rd by Keystone’s shipping weight, in a range from 11,441 lb (3520RDS) to 14,320 lb (3900DBL). 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 Sprinter 3800FLB. That page carries no model year, so the year comes from the roster page that links it, which lists the Sprinter 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 3800FLB differs from the other eight Sprinter floorplans. Most distinctive first. How these ranks are worked out.

• Hitch weight as Keystone lists it, 2,745 lb: heaviest of nine; next is the 3920DSL (2,685 lb).
• Hitch weight as a share of shipping weight, 21.5%: largest of nine; next is the 3520RDS (19.6%).
• Carrying capacity (Keystone’s term), 3,225 lb: second-largest of nine, between the 3640RLP (3,220 lb) and the 3840LRK (3,390 lb).
• Shipping weight (Keystone’s term), 12,775 lb: third-lightest of nine, between the 3500RDB (12,020 lb) and the 3640RLP (12,780 lb).
• Length, 43 ft: fourth-longest of nine, between the 3840LRK (42 ft 10 in) and the 3950SSP (43 ft 4 in).
• Fresh tank, 75 gal: smallest of nine, level with the 3520RDS; next is the 3500RDB (76 gal).
• Grey tank, 78 gal: smallest of nine, level with the 3520RDS; next are the 3500RDB, 3640RLP and two others (84 gal).
• Sleeping capacity, 6: shared with the 3500RDB; of nine, three smaller and four larger, nearest the 3520RDS, 3640RLP and 3840LRK (4) and the 3910RLQ and 3950SSP (8).

Next to the 3500RDB, the nearest lighter floorplan by shipping weight, the 3800FLB is 755 lb heavier by shipping weight, has 1,345 lb more carrying capacity, has a hitch weight 560 lb heavier, is 3 ft 8 in longer, has a fresh tank 1 gal smaller and has a grey tank 6 gal smaller; the two publish the same exterior height and sleeping capacity.

Next to the 3640RLP, the nearest heavier floorplan by shipping weight, the 3800FLB is 5 lb lighter by shipping weight, has 5 lb more carrying capacity, has a hitch weight 495 lb heavier, is 2 ft 7 in longer, has a fresh tank 2 gal smaller, has a grey tank 6 gal smaller and sleeps two more; the two publish the same exterior height.

Keystone lists 12 Sprinter floorplans for 2027. 9 have a complete Keystone figure set and no existing page here, and are profiled, from 11,441 lb to 14,320 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.