This is an OHLINS rear shock to fit a 2001-2009 CBR600F / F4i, I believe it also fits the 1999-2000 CBR600F. This is not a standard off the shelf Ohlins shock, it is a supersport spec shock and I have never seen another the same! It has a magnesium top section (the brown anodised part) and it is height adjustable. It was only on my bike for 3000 miles and is in good overall condition with no leaks. There is minor cosmetic damage shown in the last photo where the coating on the gas reservoir has rubbed slightly but this does not affect the functioning of the shock, once it is fitted the blemished area is not seen. Not sure on the RRP of this as it is I believe a bespoke shock but I believe it to be around £1500!