That kickstand is your typical double leg,ok for even or lighter balanced loads.Xtracycle has the mighty kickback centerstand that fits the FreeRadical and BD.I don't know much about these bikes but it appears like you can use Xtracycles kickback centerstand and the wideloaders on the Sun bike holes.That is from the video online.I just wish I knew for sure.I like how both the kickback and wideloaders can be used together using the same holes.See video at link.

http://tinyurl.com/48q7eqn

PS-Just viewed the pics again of the kickback at link,there maybe a fitment problem using on the Sun.Look at the top center of the kickback where it meets the frame.May not work.Xtracycle uses whats called "taco shield" which are used between the kickback metal and the bikes metal for protection.I imagine it would be luck for it to fit the Sun frame.Darn.