Road Bike Handlebar Stem Length

Mountain and road bike stems are available in different lengths and rises to suit the needs of any rider.

Road bike handlebar stem length.

Competitive racers will opt for a longer 120mm stem for optimum stretch. Riders looking to achieve a long low and aerodynamic position on the bike e g. Comfort should be your guide when adjusting the height of the handlebars. If you need a stem length beyond those extremes your bike frame is the wrong size.

Stem length designated in millimeters may be indicated on the stem. This less than 90 degree angle applies to road bikes touring bikes and indoor bikes. If you can see the hub in front of the handlebar the stem is too short. The road bike racer typically has the top of the handlebars below the seat height.

The rise angle of stem from fork to bar has quite a large effect. The effective height gained as a function of the stem s angle and length. Stems help you achieve a proper bicycle fit. The overall length of the vertical portion of the stem.

Measured vertically from the center of the handlebar clamp to an imaginary line that bisects the central meeting point of the extension and vertical portion of the stem. Proper positioning on the bike. If the stem length is correct the handlebars should completely hide the front hub. It must also address the rider s comfort biomechanics performance needs and the steering and handling of the bike.

Assuming you have a handlebar you want to marry you can use stem length to keep reach within proper fit guidelines for your type of riding but that won t do much for drop without also affecting the height of the top and hoods. One good rule of thumb for choosing the correct length stem and it works for the road cc team is to sit on the bike with your hands on the top of the hoods and look down at the front hub. Stem length is one aspect of a road bike that you can alter to increase both comfort and performance. In order to alter stem length you must first know the length of your current stem.

However most stems are not marked and must be measured in order to determine size. Dimension 31 8 stems are fully forged 6061 t6 aluminum stems that have a 4 bolt handlebar clamp. For non racers of many disciplines the top of the bars may be even with the saddle or even higher.