Full Speed Ahead Hammer 1-1/8" Heavy Duty Threadless Headset Black Model=Pro 4 Rear Hub Color Black Bottle Type Bike

Color Black Bottle Type Bike Access Style Top Weight 22 Mount Type Bolt-On Material Carbon Defined Color Black

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9 Tubeless Folding Black 120tpi

Full Speed Ahead Hammer 1-1/8" Heavy Duty Threadless Headset Black Model=Pro 4 Rear Hub Color Black Bottle Type BikeFull Speed Ahead Hammer 1 1 8" Heavy Duty Threadless Headset Black. FSA (Full Speed Ahead) Hammer Headsets. TECH SPECS Color Black Bearing Type Cup and Cone Crown Race 30 Weight 149 Defined Color Black Upper Stack Height 24. 7 S. H. I. S Upper EC34 S. H. I. S. Stem Clamp Diameter 28. 6 Threadless S. H. I. S Lower EC34