Shimano EW-SD300 Electric Wire Di2 250mm PNS New Two-Stage seal geometry seals

New Two-Stage seal geometry seals on both valve stem and at the base of valve core threads resulting in a more positive seal and improved durability

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

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

precision and durability

Undoubtedly

Shimano EW-SD300 Electric Wire Di2 250mm PNS New Two-Stage seal geometry sealsShimano 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