anyone heard of these springs?

[no1stunna]

i came across these on options. i think i remember someone talking about them but im not sure. they are cheap, but is that all they are.
(redp5)

 

[Rider69]

Progress make some very good stuff. These springs, I am sure, are of high quality. Not sure of the drop though. In an article in SCC, the RSX showdown, the Progress Group had the two best handling cars utillizing their springs. I would say that these are a good, safe bet.