ACS Maindrive Headset EC34/28.6|EC34/30 Black ModelNumber=K8143 The Sport/Asthma filter air flow

The Sport/Asthma filter air flow was very similar to the Asthma filter

where winter weather hits its peak

And finally the Century has a seamless synthetic Fibra-tek cover that reduces the incidence of high-cadence chafing

Weight:  46t (Aero) • 115g  |  48t (Aero) • 125g  |  50t (Aero) • 135g  |  52t (Aero) • 141g

ACS Maindrive Headset EC34/28.6|EC34/30 Black ModelNumber=K8143 The Sport/Asthma filter air flowMainDrive External Headsets utilize forged steel cups alloy tops and cap with sealed mechanism bearings. Color Black Bearing Type Cartridge Crown Race 30 Defined Color Black S. H. I. S Upper EC34 S. H. I. S. Stem Clamp Diameter 28. 6 Threadless S. H. I. S Lower EC34 Size EC34 28. 6 EC34 30