julio 26, 2026
36T（56.7g）/38T（66g）/40T（74g）/42T（83g）/44T（87g）. 46T（97g）/48T（107.5g）/50T（118g）/52T（128g）. A lot of optimizations have been made on the basis of the first-generation narrow wide chainring, and the functionality has been significantly improved.