A cut away view of the new 11 speed Dura Ace crankset. The larger chainring is threaded to accept the chainring bolts directly. Lots of hollow areas are used to reduce the weight of the crankset.
gruppo-7
A cut away view of the new 11 speed Dura Ace crankset. The larger chainring is threaded to accept the chainring bolts directly. Lots of hollow areas are used to reduce the weight of the crankset.