HB19 Carbon 1 Piece Handlebar Stem

What Our Gearhead® Experts Are Saying:

"The HB19 gives me an aerodynamic edge without compromising comfort. The narrower hoods naturally put me in a faster position, and the stiff carbon design feels direct when sprinting or climbing. It’s a cockpit that makes your setup feel instantly more dialed."

The Cervélo HB19 Carbon 1-Piece Handlebar & Stem is built for riders who demand aerodynamic precision without losing control or comfort. Using the Plus-Four concept, Cervélo narrows the hoods by 4cm relative to the drops—so a 38/42cm bar lets riders stay compact and aerodynamic on the hoods, then open up into a stable, wider grip for cornering, sprinting, and descending.

This design improves airflow efficiency while maintaining confident handling under load. The HB19’s full-carbon monocoque construction ensures exceptional stiffness and responsiveness, translating every watt of power directly to the bike. The smooth integration eliminates excess hardware for a streamlined cockpit that’s lighter, stronger, and faster than traditional setups.