2025 Grand Design Momentum G-Class 29G vs 2025 Forest River Shockwave 21RQMX

Detailed Comparison

The 2025 Grand Design Momentum G-Class 29G and 2025 Forest River Shockwave 21RQMX represent two compelling choices for RV enthusiasts. Let's break down what sets them apart.

The Grand Design Momentum G-Class 29G measures 34.0 ft in length at 9,500 lbs, compared to the Forest River Shockwave 21RQMX's 39.0 ft and 13,900 lbs. GVWR ratings sit at 11,900 lbs and 16,800 lbs respectively.

Capacity-wise, expect to sleep 4 in the Grand Design Momentum G-Class 29G versus 9 in the Forest River Shockwave 21RQMX. With 0 and 2 slide-outs respectively, the parked floor plans differ significantly.

Tank capacities are a key off-grid consideration. The Grand Design Momentum G-Class 29G carries 68 gal of fresh water, 41 gal gray, and 40 gal black. The Forest River Shockwave 21RQMX offers 76 gal fresh, 48 gal gray, and 50 gal black. The Forest River Shockwave 21RQMX has the edge for extended dry camping.

Budget-wise, the Forest River Shockwave 21RQMX is listed at $118,000 compared to $122,000 for the Grand Design Momentum G-Class 29G.

For family camping trips, the larger floor plan and additional berths make a real difference. For boondocking, the model with superior solar and battery setup will keep you comfortable off the grid longer. If you're going full-time, the larger tanks and more robust build quality matter enormously.

Take these specs as a starting point, then go see them in person — there's no substitute for stepping inside.