Exclusive video: Shimano Dura-Ace Di2 11-speed

By published

Cancellara gets ꦦfitteౠd with new electronic groupset

Image 1 of 6
The new four-arm chainring bolt circle is not radially symmetric. Instead, Shimano 𝓀says the arms are align💜ed more with how forces are transmitted during the pedal stroke, adding more material where it's needed and removing it where it isn't. Replacement chainrings will almost assuredly be very expensive.(Image credit: Jonny Irick)

This video originally appeared on .