I don't see an option for this on the Web site....
You will have to contact Brandon and ask about it. Back in late April he emailed all RR owners offering a larger diameter replacement head end spreader bar for anyone over 200 pounds. I think the email stated there had been two failures reported for hangers in the upper end of the weight range.
One thing to keep in mind regardless of your weight is to never pull on or lean against the spreader bars. It is tempting to grab the bar when you want to scoot up in the hammock...DON"T.
Bookmarks