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Shimano EW JC304 Di2 Junction Box 4 Ports Use With EW SD300 ModelNumber=24706 Color Black Ring Position Type Outer Color Black Ring Position Type Outer Tooth Count 34 Drivetrain Speeds 11 Chainring BCD 96 Shimano Asymmetric Material Aluminum Defined Color Black Reliable ratchet and pawl clutch is easily adjustable and repairable
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