Groove-type cable routing solves the problem of getting wires and hoses from your shifters into the stem without creating a tangled mess at the bar-stem junction. The Cervelo HB13 Carbon Road Handlebar uses external channels machined into the underside of the bar that guide Di2 wires and hydraulic brake hoses toward the stem face, where they pass into the Cervelo ST31 or ST32 stem and disappear into the steerer tube. You get the clean look of internal routing without the headaches of threading cables through tight internal passages.

The bar itself uses UD carbon construction with a flat-oval top section that provides some aerodynamic benefit while keeping enough round surface area for accessories. A 90mm-wide center section with 31.8mm diameter gives you room for a computer mount and lights without crowding your hand positions. The layup was designed to dampen road vibration before it reaches your hands, which matters on long rides where constant buzzing leads to fatigue and numbness.

Geometry runs compact with an 80mm reach and 123mm drop. The curve radius creates a smooth transition from the tops into the hoods with most modern brake lever designs, and the drops offer comfortable access to the levers when you're tucked in on descents or fighting headwinds. Four width options cover the range from 38cm through 44cm in 2cm increments.... Read More