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Ships within 48 hours · Estimated delivery Sep 16 - Sep 21
5 mm bottom bracket
Type: Rear
Pawls and springs not included
protected and handy
Weight: 284
NEW Shimano EW-JC304 Di2 Junction Box - 4 Ports, Use With EW-SD300 fork-type_not-included 5 mm bottom bracketShimano Di2 Frame Junction Box 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 Use Di2 system checker to update component firmware from http: e tubeproject. shimano. com
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