2024 Grand Design Momentum G-Class 21G vs 2025 Heartland Road Warrior 414

Detailed Comparison

Two popular options on many shoppers' shortlists — the 2024 Grand Design Momentum G-Class 21G and the 2025 Heartland Road Warrior 414. Let's see how they compare across the specs that matter most.

In terms of footprint, the Grand Design Momentum G-Class 21G stretches 44.0 ft while the Heartland Road Warrior 414 spans 38.0 ft. Weight-wise, the Grand Design Momentum G-Class 21G is the lighter rig at 10,500 lbs versus 11,400 lbs.

The Grand Design Momentum G-Class 21G sleeps 9 while the Heartland Road Warrior 414 accommodates 9. Slide-outs play a role in livability: the Grand Design Momentum G-Class 21G has 3 and the Heartland Road Warrior 414 has 0.

For boondocking enthusiasts, tank sizes matter. Fresh water capacity goes to the Heartland Road Warrior 414 at 87 gallons versus 56 gallons. Solar-wise, you get 300W on the Grand Design Momentum G-Class 21G and 100W on the Heartland Road Warrior 414. Battery banks are 200 Ah and 150 Ah.

At $77,000 MSRP for the Grand Design Momentum G-Class 21G and $76,000 for the Heartland Road Warrior 414, the Heartland Road Warrior 414 saves you $1,000. With only a 1% 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.

Both options have earned their place in the market. Your trip style and budget should be the final tiebreakers.