I checked with Ohlins and they say they don't make a rear shock for the 07 nor have any upgrade parts or springs. I weigh 190 lbs and have the rear preload cranked up to nearly max. The spring is still too soft for very aggressive cornering. I can still do a quick pace but have to be careful to look for any dips in corners. If anyone hears of a rear shock upgrade for the 07 then please let us know. Thanks.