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Shimano dura aceultegra di2 battery unit groupsets build kits
shimano dura aceultegra di2 battery unit groupsets build kits
Shimano dura aceultegra di2 battery unit groupsets build kits
Excellent sealing and reliability have been proven through repeated field tests in various riding conditions including extreme temperatures rain mud and cobble stone roads using a hard wired battery system which is both light weight and accurate compared to current wireless technology as a wireless system would require 4 batteries one for the rd one for the fd and one for each shift lever the use of a single small and discreet battery is light weight efficient and creates a robust an

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