Quoted from Boxer-Lust - Oct 20, 2009.The new tranny (from the HP2-S) with bigger bearings and slightly different gear ratios was put on R1200R bikes from spring 2008 one.I think build date 3/08 on...
You can see if it has a cast looking like a T above the bearing where the shift mechanism attaches to the tranny.Older trannies have like a circle at the tranny casing.
Shifts a little quieter and has bigger internal bearings...
According to my BMW parts guy BMW has never mentioned it specifically, but he noticed that a lot of new parts and new casing are available.
Do the early bikes have any problems?