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Precision Bearings
Heart rate functions (ECG-accurate)
and minimal brake fade under sustained braking
Climber: Clean performance on the most difficult trails
FSA No.55 ACS Integrated Tapered Headset - 1.1/8 - 1.5" - Black Color_Dark Blue Precision BearingsFSA No. 55 ACS Integrated Tapered Headset The FSA NO. 55 ACR HBS 180 is a premium integrated headset designed for modern road, gravel and mountain bike frames featuring fully internal cable routing. Engineered for seamless cockpit integration, it works with FSA's ACR (Aerodynamic Cable Routing) system to route cables and hoses cleanly through the headset and into the frame for a sleek, aerodynamic finish. ACR Aerodynamic Cable Routing: FSA's ACR
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