Enduro HDK-0008 External Bearing Kit - EC34/28.6 Upper | EC34/30 Lower Angular Contact Bearings Straight Stainless Steel ModelNumber=J1659 More than an aero extension

More than an aero extension this is an integrated shifting system for the modern triathlon/TT bike

CPC Models feature material on top of the saddle that provides higher grip better airflow and vibration absorption

2-bolt standard head

Model Xpresso 6 Spindle Steel Size 9/16" Body Material Carbon Color Black/Purple Weight 230g

Extended fender lengths and duckbill mud flaps keep feet dry and eliminate rear spray

Enduro HDK-0008 External Bearing Kit - EC34/28.6 Upper | EC34/30 Lower Angular Contact Bearings Straight Stainless Steel ModelNumber=J1659 More than an aero extensionThis unique bearing kit eliminates the external headset bearing cup and provides a simple low profile solution where the bearing itself presses directly into the head tube The kit includes fork crown race and upper split ring and cap Uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance