2025 Grand Design Momentum M-Class 350M vs 2024 Forest River Shockwave 28RQGMX

Detailed Comparison

If you're weighing the 2025 Grand Design Momentum M-Class 350M against the 2024 Forest River Shockwave 28RQGMX, you're looking at two solid contenders. Here's how they stack up.

Starting with size, the Grand Design Momentum M-Class 350M measures 42.0 ft long and tips the scales at 10,500 lbs dry weight. The Forest River Shockwave 28RQGMX comes in at 44.5 ft with a dry weight of 9,100 lbs. That gives the Forest River Shockwave 28RQGMX roughly 2.5 extra feet of length.

The Grand Design Momentum M-Class 350M sleeps 9 while the Forest River Shockwave 28RQGMX accommodates 4. Slide-outs play a role in livability: the Grand Design Momentum M-Class 350M has 3 and the Forest River Shockwave 28RQGMX has 1.

For boondocking enthusiasts, tank sizes matter. Fresh water capacity goes to the Grand Design Momentum M-Class 350M at 78 gallons versus 67 gallons. Solar-wise, you get 350W on the Grand Design Momentum M-Class 350M and 150W on the Forest River Shockwave 28RQGMX. Battery banks are 200 Ah and 150 Ah.

At $81,000 MSRP for the Grand Design Momentum M-Class 350M and $81,000 for the Forest River Shockwave 28RQGMX, the Forest River Shockwave 28RQGMX saves you $0. With only a 0% price difference, the choice comes down to features rather than cost.

If you're traveling with a family, look for the model with more sleeping positions and better storage. Boondockers: look at the fresh water capacity and solar/battery systems — they determine how long you can stay out. For the full-time RV lifestyle, every gallon of tank capacity and every inch of counter space counts.

Ultimately, both rigs have their merits — test drive each one and see which floor plan speaks to your lifestyle.