Stem

Buying advice for: Bike Cockpit: Stem

• Stem types

  Bike stems are available in different versions, which differ in terms of design and function. The classic stem, also known as the quill stem, is inserted directly into the head tube and fixed in place with an expander mechanism. It can be found on older and some modern city bikes. The Ahead stem, on the other hand, is the most common variant on modern bicycles. It is attached to the steerer tube and fixed with bolts, which makes it easier to adjust and maintain. Adjustable stems offer flexibility in adjusting the handlebar height and angle, ideal for cyclists who like to change their riding position frequently.

• Stem brands

  The best-known manufacturers include Ritchey, a brand known for its precise workmanship and innovation. FSA (Full Speed Ahead) offers a wide range of stems that are characterised by their durability and performance. Zipp, another leading brand, is particularly popular in the road bike sector and stands for lightness and stiffness. Easton and Thomson are also well-known manufacturers that offer high-quality stems for various types of bicycles.

• Materials and workmanship

  The choice of material influences the weight, stiffness and durability of a stem. Aluminium is the most commonly used material as it is light yet robust. Carbon stems offer even less weight and better shock absorption, but are often more expensive. Steel stems are heavier but offer high stability and durability. Titanium is a high-end material that is valued for its excellent combination of lightness, strength and corrosion resistance.

• Technical features

  Modern bicycle stems have a variety of technical features that improve the riding experience. The length of the stem influences the riding position and handling of the bike, with shorter stems often offering more manoeuvrability and longer ones more stability. The angle of the stem determines the height of the handlebars and can be adjusted as required. The diameter of the clamp, the area of the stem that holds the handlebars, varies and should be compatible with the handlebars. In addition, some stems offer integrated cable guides, which ensure a tidy appearance and improved cable protection.