Shimano 105 FC-R7000 50-34T 172.5mm Chainset Posted October 17, 2024 Shimano 105 FC-R7000 50-34T 172.5mm ChainsetShimano 105 FC-R7000 50-34T 172.5mm Chainset. 172.5mm cranks arm length. 2 speed (double). For 11 speed. We aim to provide you with the best service possible. Thank-you For shopping with us.