ACS Maindrive Headset EC34/28.6|EC34/30 Black ModelNumber=K8143 5+ 15 x 110mm SID

5+ 15 x 110mm SID (A1-A4) Reba (A1-A5) Reba A7 SID Select/Select+ 110-120mm (B4) Diffusion Black

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

All carbon fiber is produced by Toray and uses tailor-made Nano Epoxy Resin for very high impact resistance

Bike Spray for ultimate post-wash protection

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

ACS Maindrive Headset EC34/28.6|EC34/30 Black ModelNumber=K8143 5+ 15 x 110mm SIDMainDrive 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