How to choose your road bike handlebar?

The road handlebar should allow you to adopt a performance-oriented position while maintaining comfort for long rides. Here are all its secrets.

The standards

• The diameter: 26; 31.8 or 35 mm
• The shape: round, compact, anatomic
• The width: 36, 38, 40, 42, 44 or 46 cm
• The material: aluminium or carbon
• Technical characteristics: drop, reach, drop flare, flare out, back sweep

Types of handlebars

The diameter always stated is that of the stem clamp at the stem, i.e. at the centre of the handlebar. Previously 26 mm, the current standard has moved to 31.8 mm with the widespread adoption of aluminium. Some brands also offer 35 mm models for greater rigidity. For reference, regardless of the clamp diameter, the diameter at the lever clamp is always approximately 23/24 mm.

There are different shapes of handlebars to suit the cyclist's requirements. To help define which one you need, here are the different characteristics and their effects on riding position:

The Round

The Round is the original and most classic shape. The height (drop*) and the depth (reach*) are fairly pronounced for a very dynamic setup both in the lower and intermediate positions

The Compact

The Compact offers a lesser height and depth than the Round, making rapid position changes easier. The lower and intermediate positions being also more comfortable than on a Round, they allow you to ride longer in these postures

The Anatomic

The Anatomic, which has broadly the same dimensions as the Round but with a flat section to optimise the intermediate position, ideal for sprinters

Handlebars with integrated stems are also available. These provide a better grip, mainly when climbing, as well as superior rigidity compared to a traditional handlebar and stem assembly. However, they have one drawback: you cannot adjust the tilt of the handlebar or the position of the handlebar relative to the stem.

Handlebar width is the simplest to find, it is a measurement centre-to-centre* most of the time. Some brands, such as Deda, measure to the outside of the hoods. It is recommended to take the value that is closest to your shoulder width overall* at shoulder level.

Brand-by-brand measurement breakdown

• Centre / Centre at the hoods: Fizik - Pro - Ritchey - Zipp
• Exterior / Exterior at the hoods: Dada - Enve - Red Cycling
• Centre / Centre at the drops: FS3 - 3T - Cinelli

Then there is the material the handlebar is made from. Today it is generally made of aluminium for a good rigidity/weight/price ratio. However, to improve the rigidity/weight ratio, some are made of carbon. In a rarer case, you can also find titanium ones to optimise the comfort/weight ratio.

Which handlebar for my riding style?

Just as with saddles, choosing a handlebar is not straightforward. Depending on the geometry of your bike, your physique, your road cycling practice and your personal feel, the right model will vary. It is not uncommon to have to try several handlebars before finding the one that suits you perfectly.

But here are a few pointers to guide your choice:

• If you are a bit of "the old school" or are looking for the most aerodynamic position possible, a Round handlebar will certainly suit you.
• For a more contemporary and comfortable approach to road cycling, the Compact is today the benchmark for versatility.
• Finally, if you are a born sprinter, the Anatomic should allow you to exploit all your power.

Technical characteristics

Drop

The drop is the distance between the axis of the upper tube of the handlebar and the axis of the lower tube. It allows the position to be adapted to the cyclist's build or flexibility. A large drop offers a low, aerodynamic position. A shallow drop increases comfort with hands in the lower position and makes it easier to alternate positions on the handlebar.

Reach

The reach defines the distance between the axis of the upper tube of the handlebar and the furthest forward point in the curve. It influences the comfort and handling of the cockpit. A high reach affects the cyclist's position, which will be lower and more aerodynamic. A short reach makes it easier to alternate between "flat hand" and "hand on the hoods" and promotes a more comfortable position.

Back sweep

The back sweep refers to the angle of the handlebar that curves back towards the cyclist. A large value offers a shorter reach. This rearward sweep helps to better distribute the weight on the hands and wrists and also places them in a more natural position.

Drop Flare

Drop Flare (or Flare) refers to the angle between the vertical of the handlebar and the side of the handlebar. The greater the Flare, the more the sides flare outwards. This gives you a fairly wide position that makes steering more stable. With hands in the lower position, the cyclist can benefit from a greater width than at the hoods, which allows for a more open chest position compared to a traditional handlebar.

Flare Out

Some models also feature Flare Out, which offers a flaring of the lower part of the handlebar grip. Flare Out refers to the lateral outward flare angle of the handlebar sides. Your elbows are raised and spread for improved comfort. A greater flare enhances your control and confidence while riding

Manufacturers have adapted to electronic shifting and offer specific handlebars.

Integrated cable routing offers a seamless electronic shifting setup and an aerodynamic profile. Internal cable and housing routing cleans up the lines of the bike, while also protecting the braking and drivetrain components from the elements for enhanced durability.

Furthermore, some handlebars are drilled at the rear to allow cable routing into the stem for an even cleaner and neater finish. Subject to having a stem that is compatible with internal cable integration.