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Dura-Ace is now 12-speed and mechanical is dead! SUBSCRIBE to Bicycling: https://www.youtube.com/user/Bicyclin… Learn more: https://bit.ly/2V1LdeG It has now been five years since Dura-Ace R9100 & R9150 groups were released. We knew that the latest group from Shimano was imminent. We got a glimpse of it on some Team DSM bikes at the Baloise Belgium Tour…

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Learn how to properly adjust the rear shifting on your bike for better performance! The bike I use for the demonstration is a Trek Madone equipped with a Shimano Ultegra derailleur. Required tools: -Phillips screwdriver -5mm hex key/allen wrench (older bikes may require an 8-10mm wrench or socket) Check out these Essential tools! -Pro Bike…