Originally Posted by
GhostRider62
Not too many randonneurs are on 11 and 12 speed. The 4 arm Shimano would be the 9000, 9100, and 9200 Dura Ace (11 and 12S)
It looks like the separation of the two bonded halves is a failsafe mode, the crank, BB and pedal are not separated...?? I do have 9000 crank with lots of miles in all sort of condition, there are no apparent separations in the bonding. Not comfortable yet with my decision not to replace.
Shimano 11 speed will be 10 years old this year! I see a fair amount of 11 speed stuff on our club rides, certainly a lot more 11 speed and carbon than steel and DT shifters.