Gold Member Badge


  • You're all caught up!

How to Measure a Road Bike Stem

author image Willard Peveler, Ph.D.
Willard Peveler is an assistant professor of exercise science at Northern Kentucky University and is the author of "The Complete Book of Road Cycling and Racing." He has coached cycling at the collegiate level and triathlon for Team in Training. His research involves factors affecting performance in cycling and triathlon.
How to Measure a Road Bike Stem
How to Measure a Road Bike Stem

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. Stem length, designated in millimeters, may be indicated on the stem. However, most stems are not marked and must be measured in order to determine size.

Video of the Day

Measure Bike Stem

Step 1

Stabilize the bike by placing it in a stand or trainer, or by resting it against the wall.

Step 2

Measure from the center bolt of the headset cap to the center of the handlebar in centimeters.

Step 3

Convert the centimeter measurement to millimeters by adding a zero to the end of the measurement.

LiveStrong Calorie Tracker
Lose Weight. Feel Great! Change your life with MyPlate by LIVESTRONG.COM
  • Gain 2 pounds per week
  • Gain 1.5 pounds per week
  • Gain 1 pound per week
  • Gain 0.5 pound per week
  • Maintain my current weight
  • Lose 0.5 pound per week
  • Lose 1 pound per week
  • Lose 1.5 pounds per week
  • Lose 2 pounds per week
  • Female
  • Male
ft. in.


Demand Media