Shimano E-Tube EW-SD50 Long Internal Battery Mount
$129.99
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Manufacture PN: Manufacture UPC: 689228984219 Shimano Di2 External Battery Mounts Attaches to water bottle mounts on the down tube or seat tube of frame For use with internal wiring kits All 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/
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