Thinking about getting this but i havnt seen anyone w/ one. Is it as good as buying the whole swing arm.

I REALY want to slam and stretch my next bike (gixx 1k) But i dont want it to be perminent...

Had anyone used / heard about these? Also if im going to do a 9" stretch what size chain will i need and anyone got pics of a 6"-9" stretch?

Link:
http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW


Thanks
-B