New Shimano Dura-Ace R9150 Di2 key details and first ride
Here is a summary of the key details and new features of the new electronic Shimano Dura-Ace R9150 Di2 groupsetSummary of the key details and new features of the new electronic Shimano Dura-Ace R9150 Di2 groupset, plus our first impressions from an initial ride.