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Clip-on and Di2® RS910 junction compatible
2 separate elements: holster & waterproof drybag
110mm x 105mm footprint
Forged aluminum body
Schrader Pump Head Multivalve
Dura Ace ST-R9120 Enduro Clip-on and Di2® RS910 junctionThe DURA ACE ST R9120 hydraulic disc brake, dual control lever providing quick and intuitive shifting operation with a shorter lever stroke, redesigned internal shifting unit and lighter front shifting operation. SERVO WAVE Mechanical shift Hydraulic disc brake Mineral oil Consistent braking performance in all weather conditions Reach adjustment range (10. 9 mm) Clamp band diameter 23. 8 24. 2 mm Recommended brake caliper (not included): BR R9170
