The SM-BTC1 mounts Shimano鈥檚 SM-BTR2 on a bike鈥檚 water bottle bosses and also acts as a Junction B, connecting wires from the shifters to the battery and derailleur.
Online Shimano Di2 Battery Case SM-BTC1
SKU: Shimano Bike Parts 495 Categories: Cables, Road Bike Parts
Gear shifters & levers
Online Shimano ULTEGRA ST-R8020 11-speed STI Dual Control right
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