Shimano BMDN100 Di2 Long Battery Mount for External Wiring CheckoutTitle=SRAM DUB Wide PressFit30 Ceramic Bottom Bracket - PF30 (68-73mm) }Wolf Tooth Direct Mount Chainring

}Wolf Tooth Direct Mount Chainring - 40t SRAM Direct Mount For SRAM 3-Bolt 6mm Offset Drop-Stop B Flattop Compatible Black

EzHitch bike attachment makes installation easy

Color Black/Space Wheel Diameter 20 Frame Size 21 Primary Color Black

4130 trimoly

Shimano BMDN100 Di2 Long Battery Mount for External Wiring CheckoutTitle=SRAM DUB Wide PressFit30 Ceramic Bottom Bracket - PF30 (68-73mm) }Wolf Tooth Direct Mount ChainringShimano BMDN100 Di2 Long Battery Mount for External Wiring. Shimano Di2 External Battery MountsAll Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions Use Di2 system checker to update component firmware from http: e tubeproject. shimano. com