Toy Hauler
Grand Design RV Momentum G-Class 31g
Compare specs across all model years (2021–2025)
5
Model Years
6
Sleeps
35' 11"
Length
12,600
Avg GVWR
Our Recommendation
Which Year Should You Buy?
2023 Momentum G-Class 31g
Best Choice
Highest Mint Score (30.7).
What Changed Year-Over-Year
2023
2024
Tank Capacity Change
Fresh water capacity changed from 100 to 90 gallons.
2022
2023
Weight Increase
GVWR increased from 12,000 to 13,000 lbs (1,000 lbs heavier).
2021
2022
Capacity Change
Sleeping capacity changed from 8 to 6.
All Model Years
2025
2025 Grand Design RV Momentum G-Class 31g
30.4
13,000 lbs GVWR
1,600 lbs Hitch
35' 11"
Sleeps 6
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2024
2024 Grand Design RV Momentum G-Class 31g
28.9
13,000 lbs GVWR
1,602 lbs Hitch
35' 11"
Sleeps 6
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Best Value
2023
2023 Grand Design RV Momentum G-Class 31g
30.7
13,000 lbs GVWR
1,600 lbs Hitch
35' 11"
Sleeps 6
↑ 1,000 lbs heavier than 2022
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Check Towing
2022
2022 Grand Design RV Momentum G-Class 31g
29.9
12,000 lbs GVWR
1,600 lbs Hitch
35' 11"
Sleeps 6
↓ Sleeps 2 fewer than 2021
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2021
2021 Grand Design RV Momentum G-Class 31g
28.4
12,000 lbs GVWR
1,600 lbs Hitch
35' 11"
Sleeps 8
Original model year
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Can Your Vehicle Tow the Momentum G-Class 31g?
Enter your truck specs to see if any of these model years fit your towing capacity—and which year gives you the most safety margin.
Tip: Click a year to see the full specs, tow guidance, and recommended gear for that model year.
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