And that would explain the weight- my google digging shows that the yx600 swingarm is steel.... I think the guy sees a box section and just assumed alloy.
Maybe a DR500 will work.... Only one I see for sale is quite expensive. Would be better off with the brand new Motolana
Maybe a DR500 will work.... Only one I see for sale is quite expensive. Would be better off with the brand new Motolana