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HB19 Carbon 1 Piece Handlebar Stem
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HB19 Carbon Handlebar & Stem delivers aero efficiency and confident control
What Our Gearhead® Experts Are Saying:
"I switched to the HB19 for my Cervélo and immediately noticed how natural my position felt. The Plus-Four shape keeps me tucked in on the hoods for better aero flow, but still gives me stability in the drops on descents. It’s the kind of handlebar you forget about—until you realize how much faster and smoother you’re riding."
We love the Cervélo HB19 Carbon 1-Piece Handlebar & Stem for its clever balance of comfort and speed. Designed with Cervélo’s “Plus-Four” concept, the HB19 brings the hoods four centimeters narrower than the drops, letting us stay in an aerodynamic position without sacrificing control. Whether hammering a sprint or flying through a technical descent, the broader drops add confidence and stability when it matters most.
With its integrated carbon design, the HB19 delivers stiffness for responsive handling and low drag to help us slice through the wind. Every size is UCI-legal, giving us full confidence on race day, and the minimalist aesthetic pairs perfectly with modern Cervélo frames for a sleek, performance-first cockpit.
Details
- Integrated carbon handlebar and stem for optimized aerodynamics
- Plus-Four design keeps hoods 4cm narrower than drops for better aero position
- Wide drops enhance stability during sprints and descents
- Engineered for stiffness, precision steering, and vibration control
- Compatible with Cervélo’s current performance frames
- Lightweight, one-piece construction for efficient power transfer
- UCI-legal under updated competition regulations
- Item #CVL1X4G
- Material
- carbon
- Drop
- 125mm
- Reach
- 75mm
- Width
- [top] 360mm, 380mm, 400mm, [bottom] 400mm, 420mm, 440mm, [stem length] 80mm, 90mm, 100mm, 110mm, 120mm, 130mm
- Activity
- road cycling
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Frequently Asked Questions
How does the Cervélo HB19 Carbon 1 Piece Handlebar Stem’s Plus-Four design affect hood and drop positions?
Its Plus-Four geometry places the hoods 4 cm narrower than the drops, creating a narrower position on the hoods while retaining wider drops for control.What are the reach and drop measurements on the Cervélo HB19 Carbon 1 Piece Handlebar Stem?
The HB19 has a 75 mm reach and a 125 mm drop. Use those dimensions to compare its hand positions with your current cockpit before choosing a size.Which width and stem-length options are available for the Cervélo HB19?
The listed options include upper widths of 360, 380, or 400 mm and lower widths of 400, 420, or 440 mm, with stem lengths from 80 to 130 mm in 10 mm increments. Choose the combination that matches your existing fit and preferred hood and drop positions.Which bikes fit the Cervélo HB19 Carbon 1 Piece Handlebar Stem?
This integrated carbon cockpit is designed for Cervélo’s current performance frames. Its one-piece construction makes matching the stem length and bar dimensions to your frame’s cockpit setup especially important.How does the Cervélo HB19 handle sprints and technical descents?
The carbon one-piece design is engineered for stiffness and precise steering, while the 400–440 mm lower-width options provide wider drops for control during sprints and descents.