Destination
Forest River RV Sierra 403rd
Compare specs across all model years (2018–2024)
7
Model Years
6
Sleeps
42' 0"
Length
13,268
Avg GVWR
Our Recommendation
Which Year Should You Buy?
2018 Sierra 403rd
Best Choice
Lightest GVWR (13,268 lbs) makes it towable by more vehicles. Highest Mint Score (34.9).
What Changed Year-Over-Year
2022
2023
Length Increased
Length changed from 39' 0" to 42' 0".
2019
2020
More Compact
Length changed from 42' 3" to 39' 0".
2018
2019
Capacity Upgrade
Sleeping capacity increased from 4 to 6 with layout improvements.
All Model Years
2024
2024 Forest River RV Sierra 403rd
31.9
13,268 lbs GVWR
1,268 lbs Hitch
42' 0"
Sleeps 6
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2023
2023 Forest River RV Sierra 403rd
31.6
13,268 lbs GVWR
1,268 lbs Hitch
42' 0"
Sleeps 6
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2022
2022 Forest River RV Sierra 403rd
32.6
13,268 lbs GVWR
1,268 lbs Hitch
39' 0"
Sleeps 6
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2021
2021 Forest River RV Sierra 403rd
32.1
13,268 lbs GVWR
1,268 lbs Hitch
39' 0"
Sleeps 6
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2020
2020 Forest River RV Sierra 403rd
31.6
13,268 lbs GVWR
1,268 lbs Hitch
39' 0"
Sleeps 6
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2019
2019 Forest River RV Sierra 403rd
31.4
13,268 lbs GVWR
1,268 lbs Hitch
42' 3"
Sleeps 6
↑ Sleeps 2 more than 2018
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Best Value
2018
2018 Forest River RV Sierra 403rd
34.9
13,268 lbs GVWR
1,268 lbs Hitch
42' 3"
Sleeps 4
Original model year
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Can Your Vehicle Tow the Sierra 403rd?
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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