No need to buy a new Weight Distribution Hitch every time you get a new trailer. The Blue Ox SwayPro spring bars are made so you can upgrade your current SwayPro to accommodate a heavier or lighter trailer. All other components can stay.

The spring bars are marked with a dot system so you can easily identify what weight rating your SwayPro is.

350lb Bar = No Dots
550lb Bar = (1) Dot
750lb Bar = (2) Dots
1000lb Bar = (3) Dots
1500lb Bar = (4) Dots
2000lb Bar = (5) Dots