Fitted new Metzeler Roadtec 01 rear tyre (the PR4 did 16,400km to just short of the wear bars) and while the wheel was out to change the tyre I removed the swing arm to grease all the associated bearings then fitted a new chain and sprockets on reassembly. The Superlinks chain had done 63,200km and was near the wear limit.
I hate refitting the exhaust system on the 650 and wish they had put a joint where the muffler can meets the pipe.