Di2 4-Port Junction Box Vendor_Continental For use with flat mount

For use with flat mount brakes

the BikeSmart Metro Pannier features a large main compartment with a flap top velcro enclosure and a zippered front pocket

Outside Diameter: 31

Tubeless valves and parts designed after years of experience with ideal and less than ideal rim and tire combinations

Chain Compatibility:Campagnolo

Di2 4-Port Junction Box Vendor_Continental For use with flat mountShimano Di2 Frame Junction Box FEATURES: Frame Junction Box connects via SD50 E tube wires to four different points: front derailleur, rear derailleur, cockpit junction box and battery mount All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions