Shimano EW-SD300 Electric Wire Di2 250mm PNS They are pinned to the

They are pinned to the high tensile strength C67 NiCrMo2 steel outer links – a more resistant steel with a higher carbon content

heavier riders or frequent riding on rough chip seal and wet roads

training sorties and long rides (Using 700C—25C tires as a control metric)

Suitable and safe to use - specifically designed for bike shoesAdvanced polymer technology offers excellent performance without using harmful chemicalsWater-based formulaSafe on technical fabrics

Undoubtedly

Shimano EW-SD300 Electric Wire Di2 250mm PNS They are pinned to theShimano Ew Sd300 Electric Wire DI2 250mm Specifications Compact design makes new electric components smaller and lighter EP8 EP800 Series Routing: for external routing Mfr Claimed Weight TBC