Mountain Bike Measurements
Bike setup
  • Place your bike on a level floor with the rear wheel touching a vertical wall.
  • The bike should be perpendicular to the wall.
  • Use some string to cinch the front wheel to the down tube so the handlebars are square with the frame.
  • Clamp or tape some string between the ends of the grips so that the string starts on the top of the grips.

Measuring
  • Use a tape measure or yard stick
  • Measure to the nearest 1/16" or 1mm
  • Take the measurement at least three times and average the figures
  • Record the measurements in this form in millimeters
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Bike setup
Handlebar setup
Name (first and last)
*
Bike model
*
Include Brand, model, model year, and size.
Crank length (mm)
*
The number is usually stamped or printed on the inside of the crank arm.
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Bottom bracket height (mm)
*
Measure from the center of the crank vertically to the ground.
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Saddle height (mm)
*
Measure from the center of the crank to the top of the saddle along the seat tube.
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Seat post clamp height (mm)
*
Measure from the center of the crank to the center of the seat post clamp.
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Seat post clamp setback
*
Measure from the wall to the center of the crank. Measure from the wall to the center of the seat post clamp. The difference is the seat post clamp setback.
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Saddle height off ground (mm)
*
Measure vertically from the ground to the top of the saddle.
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Handlebar height off ground (mm)
*
Measure from the top of the bar end vertically to the ground. Measurement both sides and take the average.
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Handlebar setback (mm)
*
Measure from the center of the crank to the string between the handlebars.
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Grip diameter (mm)
*
Measure the diameter of your grips.
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