![]() ![]() zero drop) or a slight rise (5 to 7 degrees). Most recreational road riders will be most comfortable with either a neutral angle (i.e. If you observe competitive road racing bikes, you will find that many are fitted with either zero drop (90 degrees with the steerer tube) or a drop angle (some people use the contradictory term “ negative rise“) to give racers a more aggressive, stretched out and aerodynamic position on the bike. Many threadless stems can be flipped to give either a rise or drop, depending on the rider’s preference. The stem rise (or its opposite: drop) is the angle the stem deviates from horizontal, or the 90-degree angle with the steerer tube. ![]() If you feel like you need a stem shorter or longer than these lengths, then a session with an experienced bike fitter is probably in order! 2. Generally speaking, most road bikes come with stem lengths between 90mm to 120mm. While the correct stem length is ideally determined by a proper bike fitting session, experimenting with different lengths can allow you to settle on the one that feels best on your bike and for your style of riding. Pick a stem that’s too long and you might feel overstretched on the bike and have less control especially in tight turns and at higher speeds. Stem length is a primary aspect to consider, due to its direct relationship to the upper body positioning, general bike fit and handling characteristics on the road. Choosing a stem: selection criteria: The stem geometryĪ stem will have four key measurements: length, rise, handlebar clamp diameter and fork steerer tube clamp diameter. In this article, we focus on modern threadless stems. The other, older type of stem is known as a quill stem, and it is used on bikes that employ forks that have a threaded streerer tube. The overwhelming majority of modern bicycles have what is known as a threadless headset, and accordingly use a threadless stem which clamps to the fork’s steer tube. There are two main types of road bike stems, which is determined by the type of headset your bike’s frame uses. ![]() This post might contain affiliate links for which we may make a small commission at no extra cost to you should you make a purchase. ![]()
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