2026 Grand Design Momentum 351MS
Toy Hauler · Fifth Wheel Toy Hauler · 39.92 ft · sleeps 6
The 2026 Grand Design Momentum 351MS is a toy hauler (fifth wheel toy hauler) built on a Momentum full-frame. At sleeps 6, 39.92 ft long, 15,760 lbs dry, it's positioned for owners who haul motorcycles, ATVs, or bikes.
Floor plan

Photos of the 2026 Grand Design Momentum 351MS
Walkthrough video
Video courtesy of Campers Inn Walkthrough Videos on YouTube.
Full specifications
Dimensions
| Length | 39.92 ft |
|---|---|
| Slide-Outs | 3 |
Weights
| Dry Weight | 15,760 lbs |
|---|---|
| GVWR | 19,000 lbs |
Living
| Sleeps | 6 |
|---|---|
| Bunkhouse | No |
Tanks
| Fresh Water | 140 gal |
|---|---|
| Grey Water | 52 gal |
| Black Water | 104 gal |
Amenities
| Outdoor Kitchen | No |
|---|---|
| Theater Seating | No |
| Residential Fridge | No |
| Fireplace | No |
| Four-Season | No |
| Off-Road Capable | No |
Similar Toy Haulers to consider
Other toy haulers in the catalog with comparable size and price.
Frequently asked questions
How many people does the 2026 Grand Design Momentum 351MS sleep?
The 2026 Grand Design Momentum 351MS sleeps 6.
How long is the 2026 Grand Design Momentum 351MS?
The 2026 Grand Design Momentum 351MS is 39.92 feet long.
What's the dry weight of the 2026 Grand Design Momentum 351MS?
The 2026 Grand Design Momentum 351MS has a dry weight of 15,760 lbs and a GVWR of 19,000 lbs.
Where can I buy the 2026 Grand Design Momentum 351MS?
Pirka Wakka is a brand-agnostic catalog and doesn't sell RVs. The "Buy on Grand Design" link on this page sends you to the manufacturer's product page — they'll route you to an authorized dealer.
Not sure if the 2026 Grand Design Momentum 351MS is right for you?
Tell Matchmaker your trip, your budget, and your tow vehicle. She'll narrow the catalog to the 2-4 RVs that actually fit — verified specs only, no upsells.
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