2027 Keystone Sprinter3840LRK

Keystone publishes three weights for the Sprinter 3840LRK: a shipping weight of 12,910 lb, a carrying capacity of 3,390 lb and a hitch weight of 2,370 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 123 gal fresh, 84 gal gray and 84 gal waste, as Keystone lists them. Fresh water weighs about 8.3 lb per US gallon, so a full fresh tank is roughly 1,021 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 5th 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 3840LRK. 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 3840LRK differs from the other eight Sprinter floorplans. Most distinctive first. How these ranks are worked out.

• Carrying capacity (Keystone’s term), 3,390 lb: largest of nine; next is the 3800FLB (3,225 lb).
• Fresh tank, 123 gal: largest of nine; next are the 3640RLP, 3900DBL and three others (77 gal).
• Hitch weight as Keystone lists it, 2,370 lb: fourth-lightest of nine, between the 3640RLP (2,250 lb) and the 3950SSP (2,545 lb).
• Shipping weight (Keystone’s term), 12,910 lb: fifth-lightest of nine, between the 3640RLP (12,780 lb) and the 3910RLQ (13,675 lb).
• Length, 42 ft 10 in: fifth-shortest of nine, between the 3920DSL (42 ft 9 in) and the 3800FLB (43 ft).
• Sleeping capacity, 4: smallest of nine, level with the 3520RDS and 3640RLP; next are the 3500RDB and 3800FLB (6).
• Hitch weight as a share of shipping weight, 18.4%: shared with the 3950SSP; of nine, two smaller and five larger, nearest the 3500RDB (18.2%) and the 3900DBL (18.5%).
• Grey tank, 84 gal: shared with the 3500RDB, 3640RLP and 3950SSP; of nine, two smaller and three larger, nearest the 3520RDS and 3800FLB (78 gal) and the 3910RLQ (123 gal).

Next to the 3640RLP, the nearest lighter floorplan by shipping weight, the 3840LRK is 130 lb heavier by shipping weight, has 170 lb more carrying capacity, has a hitch weight 120 lb heavier, is 2 ft 5 in longer and has a fresh tank 46 gal larger; the two publish the same exterior height, grey tank and sleeping capacity.

Next to the 3910RLQ, the nearest heavier floorplan by shipping weight, the 3840LRK is 765 lb lighter by shipping weight, has 765 lb more carrying capacity, has a hitch weight 300 lb lighter, is 7 in shorter, has a fresh tank 46 gal larger, has a grey tank 39 gal smaller and sleeps four fewer; 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.