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or anyone chasing critical marginal gains on the bike
Magnet at bottom of solvent reservoir draws particles scrubbed from chain
SERIES Dura-Ace GENERATION Dura-Ace R9100 NUMBER OF SPEEDS 11 CASSETTE OR FREEWHEEL Cassette FINISH Anodized
Must purchase battery
Shimano SM-JC41 E-Tube Di2 Internal Frame Junction Box Nutrition or anyone chasing critical marginalFrame 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