01 What makes it unique
Keystone publishes three weights for the Sprinter 3950SSP: a shipping weight of 13,830 lb, a carrying capacity of 2,715 lb and a hitch weight of 2,545 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 77 gal fresh, 84 gal gray and 45 gal waste, as Keystone lists them. Fresh water weighs about 8.3 lb per US gallon, so a full fresh tank is roughly 639 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 7th 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 3950SSP. 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 3950SSP differs from the other eight Sprinter floorplans. Most distinctive first. How these ranks are worked out.
- Shipping weight (Keystone’s term), 13,830 lb: third-heaviest of nine, between the 3910RLQ (13,675 lb) and the 3920DSL (13,840 lb).
- Length, 43 ft 4 in: third-longest of nine, between the 3800FLB (43 ft) and the 3910RLQ (43 ft 5 in).
- Carrying capacity (Keystone’s term), 2,715 lb: fourth-largest of nine, between the 3910RLQ (2,625 lb) and the 3640RLP (3,220 lb).
- Hitch weight as Keystone lists it, 2,545 lb: fifth-lightest of nine, between the 3840LRK (2,370 lb) and the 3900DBL (2,645 lb).
- Hitch weight as a share of shipping weight, 18.4%: shared with the 3840LRK; of nine, two smaller and five larger, nearest the 3500RDB (18.2%) and the 3900DBL (18.5%).
- Sleeping capacity, 8: shared with the 3910RLQ; of nine, five smaller and two larger, nearest the 3500RDB and 3800FLB (6) and the 3900DBL (10).
- Grey tank, 84 gal: shared with the 3500RDB, 3640RLP and 3840LRK; of nine, two smaller and three larger, nearest the 3520RDS and 3800FLB (78 gal) and the 3910RLQ (123 gal).
Next to the 3910RLQ, the nearest lighter floorplan by shipping weight, the 3950SSP is 155 lb heavier by shipping weight, has 90 lb more carrying capacity, has a hitch weight 125 lb lighter, is 1 in shorter and has a grey tank 39 gal smaller; the two publish the same exterior height, fresh tank and sleeping capacity.
Next to the 3920DSL, the nearest heavier floorplan by shipping weight, the 3950SSP is 10 lb lighter by shipping weight, has 155 lb more carrying capacity, has a hitch weight 140 lb lighter, is 7 in longer, has a grey tank 45 gal smaller and sleeps four fewer; the two publish the same exterior height and fresh tank.
02 Full specifications
Dimensions
- Exterior length
- 43' 4"
- Exterior height
- 13' 4"
- Exterior width
- Not published by Keystone
Weights
- Dry / unit base weight (UVW)
- Not published by Keystone
- GVWR (max loaded)
- Not published by Keystone
- Shipping weight (Keystone’s term)
- 13,830 lb
- Carrying capacity (Keystone’s term)
- 2,715 lb
- Hitch weight, as Keystone lists it
- 2,545 lb
Capacities
- Fresh water
- 77 gal
- Gray water
- 84 gal
- Waste water
- 45 gal
Running gear
- Hitch type
- Fifth wheel (pin box)
- Tire size
- ST235/80R16G
Sleeping & layout
- Sleeps
- 8
- Propane
- 60 lb
- Refrigerator
- 16 cu ft
How these published figures sit against the rest of the catalogue: fifth wheel pin weight and payload; fresh, grey and black tank sizes; camper trailer size chart.
Towing it
Can’t check: Keystone publishes no GVWR. A tow check needs the GVWR, the most the trailer may weigh loaded, and Keystone prints none for this floorplan, so this site does not work one out. Read the GVWR on the trailer’s own federal weight label and hold it against your tow vehicle’s ratings.
03 The Sprinter floorplan family
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.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| 3520RDS | 39' 5" | 4 | Profiled |
| 3500RDB | 39' 4" | 6 | Profiled |
| 3800FLB | 43' 0" | 6 | Profiled |
| 3640RLP | 40' 5" | 4 | Profiled |
| 3840LRK | 42' 10" | 4 | Profiled |
| 3910RLQ | 43' 5" | 8 | Profiled |
| 3950SSP | 43' 4" | 8 | Profiled |
| 3920DSL | 42' 9" | 12 | Profiled |
| 3900DBL | 43' 6" | 10 | Profiled |
| 3590LFT | — | 10 | Catalogued · Keystone publishes no shipping weight, carrying capacity, hitch, length, height, fresh, grey, waste for it |
| 3600RLS | 40' 11" | 4 | Catalogued · Keystone publishes no shipping weight, carrying capacity, hitch for it |
| 3810QBS | — | 12 | Catalogued · Keystone publishes no shipping weight, carrying capacity, hitch, length, height, fresh, grey, waste for it |
Keystone lists 12 Sprinter floorplans for 2027. 9 are profiled here; the rest are catalogued with the reason against each.
04 Notes on this floorplan
What Keystone does not publish for the Sprinter
No GVWR, no unloaded (dry) weight under that name, no dry hitch weight and no exterior width appear on Keystone’s floorplan pages for this series, so those rows read as not published. Nothing is filled from a sibling floorplan, a different model year or a dealer listing.
Read the label on the trailer
Federal rules put a load-carrying label inside every RV trailer: its unloaded weight with full propane, its cargo carrying capacity and its GVWR (49 CFR 571.110 and 571.120). On a Sprinter those figures come from the trailer, not from this page, and they govern the towing decision.
05 How it compares
13,675 lb shipping weight against this plan’s 13,830 lb (Keystone’s figures, same series, same model year).
13,840 lb shipping weight and 2,560 lb carrying capacity, against this plan’s 13,830 lb and 2,715 lb.
07 Where this floorplan sits
Closest sibling: the Sprinter 3910RLQ, nearest on the published figures. It differs on 3 of the 5 fields both publish (this plan first): length 43 ft 4 in vs 43 ft 5 in; hitch weight 2,545 lb vs 2,670 lb; grey tank 84 gal vs 123 gal. They match on sleeps and fresh tank.
| Sprinter plans | This plan | Position, low to high | Range |
|---|---|---|---|
| Hitch weight (lb) | 2,545 | 5 of 9 | 2,185–2,745 |
| Length | 43 ft 4 in | 7 of 9 | 39 ft 4 in–43 ft 6 in |
| Fresh tank (gal) | 77 | 4–8 of 9 | 75–123 |
| Grey tank (gal) | 84 | 3–6 of 9 | 78–129 |
| Sleeps | 8 | 6–7 of 9 | 4–12 |
| Nearest Sprinter siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| Sprinter 3950SSP | 43 ft 4 in | 8 | — | — | — | 2,545 | 77 |
| Sprinter 3910RLQ | 43 ft 5 in | 8 | — | — | — | 2,670 | 77 |
| Sprinter 3800FLB | 43 ft 0 in | 6 | — | — | — | 2,745 | 75 |
| Sprinter 3500RDB | 39 ft 4 in | 6 | — | — | — | 2,185 | 76 |
| Sprinter 3900DBL | 43 ft 6 in | 10 | — | — | — | 2,645 | 77 |
| Sprinter 3640RLP | 40 ft 5 in | 4 | — | — | — | 2,250 | 77 |
All 9 Sprinter floorplans: Sprinter line hub.
08 Common questions about the 3950SSP
What is the pin weight of the 3950SSP?
2,545 lb as published.
How many people does the 3950SSP sleep?
It is rated to sleep 8. 2 of the 9 Sprinter floorplans that publish a count sleep more.
What are the tank capacities on the 3950SSP?
Fresh 77, grey 84 gallons.
How long is the 3950SSP?
43' 4" overall, tongue or pin box included.
From the figures above.
09 What this page publishes, and what it does not
8 of the 18 fields this catalogue tracks are published for the 3950SSP. Not published: dry weight, GVWR, cargo capacity (CCC), exterior width, interior height, black tank, slide count, axle count, awning, air conditioning.
Sourcing rules: methodology.
10 Manuals & documents
Sources: keystonerv.com (linked below); the full source note is at the foot of the page.
11 NHTSA safety record
NHTSA holds 17 recall campaigns and 28 owner complaints (model years 2005 on) against the Sprinter line (a recall and a complaint are not the same thing).
What to look at on a used one. Across the 28 complaints filed on this line the most-reported components are tires (29%), equipment (18%) and structure (18%).
Recall coverage here is not complete, and complaints are owners’ unverified reports (how this record is built). Check a specific VIN at NHTSA before you buy. Full tables are on the Sprinter line page.