2027 Keystone Sprinter 3840LRK vs 3950SSP
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Key differences
Both are 2027 Fifth wheel models from the Keystone Sprinter line. Here's how they differ, from manufacturer specifications.
- The 3950SSP is 6″ longer: 43′ 4″ vs 42′ 10″.
- The 3840LRK is 920 lb lighter unloaded: 12,910 vs 13,830 lb.
- The 3840LRK lists 675 lb more cargo capacity: 3,390 vs 2,715 lb.
- The 3840LRK has a 175 lb lighter hitch weight: 2,370 vs 2,545 lb.
- The 3950SSP sleeps 4 more: 8 vs 4.
- The 3840LRK holds 46 gal more fresh water: 123 vs 77 gal.
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YOUR SHORTLIST
Floorplan
PRICING
Manufacturer price (USD)
Not verified
Not verified
Lowest tracked dealer price (USD)
No recently verified dealer price
No recently verified dealer price
Est. monthly payment (USD)
No verified price to estimate from
No verified price to estimate from
DIMENSIONS & WEIGHTS
Exterior length
42′ 10″
43′ 4″
Exterior width
—
—
Exterior height
13′ 4″
13′ 4″
Shipping / unloaded weight
12,910 lb
13,830 lb
GVWR
—
—
Listed cargo capacity
3,390 lb
2,715 lb
Listed hitch weight
2,370 lb
2,545 lb
LIVING & SLEEPING
Sleeping capacity
4
8
Slide-outs
—
—
Main bed
70" x 80" king bed w/ gas strut storage
70" x 80" king bed w/ gas strut storage
Bunk beds
No
✓ Yes
Dinette
Not verified
Not verified
Bathroom
Not verified
Not verified
Refrigerator
16 Cu. Ft. 12V refrigerator
16 Cu. Ft. 12V refrigerator
TANKS & EVERYDAY FEATURES
Fresh water
123 gal
77 gal
Gray water
84 gal
84 gal
Black water
84 gal
45 gal
Awning length
—
—
Shore power / electrical service
Not verified
Not verified
Solar equipment
SolarFlex™ Ready
SolarFlex™ Ready
Outdoor kitchen
✓ Yes
✓ Yes
Washer/dryer prep
✓ Yes
✓ Yes
Microwave
✓ Yes
✓ Yes
Cooktop
Free Standing Residential Gas Range / Oven
Free Standing Residential Gas Range / Oven
Air conditioning
(2) Air conditioning units; 3rd. A/C
(2) Air conditioning units; 3rd. A/C
Electric fireplace
✓ Yes
✓ Yes
Backup camera
Not verified
Not verified
Propane tanks
2
2
Tire size
ST235/80R16G
ST235/80R16G
SOURCES & VERIFICATION
Weight basis
Manufacturer shipping weight
Manufacturer shipping weight
Source checked
2026-10-22 Manufacturer ↗
2026-10-22 Manufacturer ↗
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Manufacturer floorplan images © their respective manufacturers. Specs checked October 19, 2026; exact-unit labels and production options may differ. “Not verified” or a dash means we have no confirmed value. “Not listed” means the applicable manufacturer equipment was checked but does not mention the feature; it does not mean “No.” “Conflicting data” means manufacturer entries disagree. “Optional” equipment is available but is not confirmed as standard. Camera prep does not confirm an installed camera. Weights are kept separate: unloaded weight, GVWR, cargo capacity, and hitch weight. Confirm every specification for the exact model year and configuration with the manufacturer. This tool does not establish towing compatibility.
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