Identify this part?

[BikerMedic]

The PO gave me this shock with the bike. It looks nice, highly adjustable. Anybody know what bike its from and how much it could be worth? I'd prefer a good set of fork springs over a fancy rear shock.

[attachment deleted by admin]

[mennobike]

This is a straight up guess, but I'd say r6(r?)... In any case, it won't fit the GS cause it has the wrong bottom connection.

EDIT TO PUT VALUE IN

On eBay, if I'm correct on r6, these versions go for about 40-60 bucks.

[BikerMedic]

Good call! Looks identical to the ones on ebay. Thanks, I'm going to put it on ebay and hopefully raise some $$ for some springs.