Fifth Wheel
Northwood Fox Mountain 255rks
Compare specs across all model years (2017–2021)
5
Model Years
4
Sleeps
29' 10"
Length
12,300
Avg GVWR
Our Recommendation
Which Year Should You Buy?
2021 Fox Mountain 255rks
Best Choice
Highest Mint Score (33.7). Most recent model year with latest updates.
What Changed Year-Over-Year
2020
2021
Weight Increase
GVWR increased from 11,500 to 12,000 lbs (500 lbs heavier).
2017
2018
Weight Reduction
GVWR dropped from 15,000 to 11,500 lbs (3,500 lbs lighter), improving towability.
All Model Years
Best Value
2021
2021 Northwood Fox Mountain 255rks
33.7
12,000 lbs GVWR
1,856 lbs Hitch
29' 10"
Sleeps 4
↑ 500 lbs heavier than 2020
View Full Specs
Check Towing
2020
2020 Northwood Fox Mountain 255rks
32.9
11,500 lbs GVWR
1,880 lbs Hitch
29' 10"
Sleeps 4
View Full Specs
Check Towing
2019
2019 Northwood Fox Mountain 255rks
32.9
11,500 lbs GVWR
1,880 lbs Hitch
29' 10"
Sleeps 4
View Full Specs
Check Towing
2018
2018 Northwood Fox Mountain 255rks
32.7
11,500 lbs GVWR
1,955 lbs Hitch
29' 10"
Sleeps 4
↓ 3,500 lbs lighter than 2017
View Full Specs
Check Towing
2017
2017 Northwood Fox Mountain 255rks
31.4
15,000 lbs GVWR
1,918 lbs Hitch
29' 10"
Sleeps 4
Original model year
View Full Specs
Check Towing
Can Your Vehicle Tow the Fox Mountain 255rks?
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.

Leave the Noise Behind.
Reconnect Outdoors.
Our mission is to help people make well-informed RV buying decisions, so they can leave the noise and screens behind, reconnect with family, and create unforgettable memories in the great outdoors.
Free tools. No sales pressure. Just better decisions.