Sorry I haven't posted in a while...
Does anyone know what changed on the 2006 cylinder head to have Triumph pull a new part number? The number changed from T1150810 to T1150820. I know the 2006 955i engine had some cover changes and no fuel return. If I look at cylinder heads on BikeBandit it shows the T1150820 on all years from 2001 to 2006.
Black ones are still faster.