Just in case anyone is interested this will probably fit a GS500 (best to ask first) its for a GPZ600 but the part number and look is close to the GS version I guess its spring would be slightly firmer then the gs version which I have and its great and at a good price its got heaps of time before it goes off so give you time to find out if it fits if so at least we have another shock to add to the list of shocks that fit :thumb: :cheers:
http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&category=35231&item=2483500376&rd=1
also just found one for a GSX600 same mob but we know that these fit
http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&category=35232&item=2483506916&rd=1