How To Measure Bicycle Valve Stem Length

However most stems are not marked and must be measured in order to determine size.

How to measure bicycle valve stem length. The effective length of the stem measured from the centerpoint of the steering bore to the center of the handlebar clamp without accounting for rise. Zipp for example makes. If your wheels are even deeper than the longest valve you can find you can buy valve extenders to add length to your valve. Schrader valves will not fit your bike wheels.

On stems with built in rise this measurement will be made along an imaginary line as seen in the diagram. Always check your valve to make sure it has no cracks or splits in it. Continental quality long valve inner tube from wiggle for 5 99 7 00 inner tube material. Road bike valves are called presta.

You will not be able to use the pump at your local fuel station to pump up tires with a presta valve. The real length of the stem from the center of the steering bore to the handlebar clamp we call it stem length. Measure the length of your mountain bike stem from the center of the headset to the center of you handlebars. This size specific approach goes a long way to getting you set up with the correct stem length providing you ve chosen the right size frame another area where a bike fit comes in useful.

In order to alter stem length you must first know the length of your current stem. Always make sure your valve is inserted vertically do not have a valve leaning over to. There s a range of lengths available. Therefore as we are unaware of your current position we will do our best to meet everyone somewhere in the middle.

For example if your mountain bike stem measures 6 inches multiply by 25 4 to obtain the. Stem length designated in millimeters may be indicated on the stem. The useful length of the stem measured from the center point of the steering bore to the center of the handlebar clamp except accounting to rise on stems this measurement may be made along an imaginary line. The center of the bar is where the handlebar installs through the mountain bike stem.

Right valve length is important to wheels rims. Dependent upon your bicycle fanaticism a discussion on how to choose a suitable valve length to fit your rim well could be brief or it could last for pages. Most bike manufacturers fit different length stems across the size range so shorter stems on smaller frames and longer stems on bigger frames. Convert the mountain bike stem measurement to millimeters.

How to measure a bike stem.