Cervelo Headset 3 Chains features a 21mm internal width

features a 21mm internal width with hook to achieve maximum efficiency with tubeless tires ranging from 28 to 32mm [insert tire compatibility table]

The watt savings with a CeramicSpeed OSPW System for SRAM eTap start at 1

Internal O-ring to provide secure fitment on crank spindle without needing glue

This allows Full Speed Ahead to match your needs as perfectly as our chainrings match a chain

Carbohydrates help refuel your energy tanks (glycogen stores) and protein supports growth and maintenance of muscle mass

Cervelo Headset 3 Chains features a 21mm internal widthCeramicSpeed headset bearings will take your handling of your bike to new levels, our bearings are built by hand in Denmark to ensure the highest performance and longevity. Cervlo Headset 3 comes in two variants, with our CeramicSpeed Standard Bearings and with out Coated Bearings. The Coated Bearings offer an even longer lifetime and lower friction. Learn more about the coated advantage here In the box 1 1 8" upper headset bearing 1 1 2" lower