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2027 Grand Design Momentum 381MS vs Keystone Fuzion 419

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Key differences

Both are 2027 Fifth-wheel toy hauler models. Here's how they differ, from manufacturer specifications.

  • The Keystone Fuzion 419 is 7″ longer: 44′ 6″ vs 43′ 11″.
  • The Keystone Fuzion 419 is 651 lb lighter unloaded: 17,071 vs 17,722 lb.
  • The Grand Design Momentum 381MS has a 44 lb lighter hitch weight: 3,726 vs 3,770 lb.
  • The Keystone Fuzion 419 sleeps 2 more: 8 vs 6.
  • The Keystone Fuzion 419 holds 33 gal more fresh water: 173 vs 140 gal.
  • The Keystone Fuzion 419 has a $41,630 lower published MSRP: $161,718 vs $203,348.
YOUR SHORTLIST
Grand Design Momentum

381MS

2027 · Fifth-wheel toy hauler

Specs & prices
Keystone Fuzion

419

2027 · Fifth-wheel toy hauler

Specs & prices
Floorplan
PRICING
Manufacturer price (USD)
$203,348Published MSRPChecked 2026-10-23 · Price source
$161,718Published MSRPChecked 2026-10-23 · Price source
Lowest tracked dealer price (USD)
No recently verified dealer price
No recently verified dealer price
Est. monthly payment (USD)
$1,645/mo20 years at 8.99% APR with 10% down, based on the MSRP. Before tax and fees.Customize this payment
$1,309/mo20 years at 8.99% APR with 10% down, based on the MSRP. Before tax and fees.Customize this payment
DIMENSIONS & WEIGHTS
Exterior length
43′ 11″
44′ 6″
Garage length
15′ 0″
16′ 0″
Exterior width
8′ 5″
—
Exterior height
13′ 6″
13′ 3″
Shipping / unloaded weight
17,722 lb
17,071 lb
GVWR
23,500 lb
—
Listed cargo capacity
—
3,929 lb
Listed hitch weight
3,726 lb
3,770 lb
LIVING & SLEEPING
Sleeping capacity
6
8
Slide-outs
3
—
Main bed
60 X 80 Queen Bed (King Opt.)
King bed suite
Bunk beds
Not verified
✓ Yes
Dinette
Not verified
Not verified
Bathroom
Not verified
Not verified
Refrigerator
20 cu. ft. (power type not verified)
Stainless steel 16 Cu. Ft. 12V refrigerator
TANKS & EVERYDAY FEATURES
Fresh water
140 gal
173 gal
Gray water
52 gal
104 gal
Black water
104 gal
104 gal
Awning length
—
—
Shore power / electrical service
Not verified
50 amp power cord listed; service not verified
Solar equipment
Not verified
SolarFlex™ Discover 440i
Outdoor kitchen
Not verified
No
Washer/dryer prep
Not verified
✓ Yes
Microwave
Not verified
✓ Yes
Cooktop
Not verified
Lusso® 4-burner range and 24" stainless steel oven
Air conditioning
30,000 BTU A/C
Chill Cube high efficiency A/C system (3 A/C's standard); Ducted heat and independent free delivery A/C
Electric fireplace
Not verified
✓ Yes
Backup camera
Not verified
Not verified
Propane tanks
2
2
Tire size
ST215/75R17.5 LRH
215/75R17.5J
SOURCES & VERIFICATION
Weight basis
Manufacturer unloaded vehicle weight
Manufacturer shipping weight
Source checked
2026-10-23 Manufacturer ↗
2026-10-23 Manufacturer ↗

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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