This M9 black flange unit includes the connecting bolt, olive, and insert pin for secure hose attachment to ST-R9120/ST-R9170 shifters and compatible calipers (BR-R9170/R9270). Designed for high-stiffness SM-BH90-JK-SSR hoses; torque to 5-7 N·m at lever end. Fully compatible with Ultegra/105/GRX equivalents.
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