Dura Ace ST-R9120
Product # 230941
The 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
  • Recommended brake hose kit (not included): SM-BH90-JK-SSR
Specs
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