How to Properly Measure the Frame of Your Mountain Bike
To measure the frame of a mountain bike, you need to measure the distance from the center of the bottom bracket to the top of the seat tube. This measurement is called the seat tube length. You can also measure the distance from the center of the head tube to the center of the seat tube, which is called the effective top tube length. These measurements are important in determining the proper fit for a rider and choosing the right size mountain bike.