If you’re in the market for a new mountain bike, you’ll want to make sure you measure the frame correctly. Knowing how to measure a mountain bike frame is essential to getting a bike that fits your needs and riding style. While the process varies depending on the type and purpose of the bike, there are some basic steps you should take to ensure you get the right fit.
The first step is to measure the frame at the bottom bracket, or the area where the crank arms connect to the frame. Take the measurements with a standard measuring tape. Most bikes require a bottom bracket height of 11-13 inches, so make sure yours is in that range. Then measure the distance between the center of the bottom bracket and the top tube. Finally, take the distance from the headset to the seat tube.
The next step is to measure the seat tube. Take your measuring tape and find the distance from the center of the bottom bracket to the top of the seat tube. Most bike frames have a seat tube length of 22-31 inches, so make sure you’re within this range. Once these measurements are taken, you can move on to the standover height.
Measuring the standover height is slightly more involved because it depends on how tall you are. Check the manufacturer’s recommendations for the appropriate standover height, which should fall between 6 and 8 inches above the tube measured from the top of the seat tube. To measure your own standover height, stand up straight and then measure the distance from your crotch to the floor. Subtract this number from the manufacturer’s recommended standover height.
Once you have the proper measurements for the frame, you can move on to the components. First, take the measurements of the handlebars. Measure the reach and width (horizontally and vertically) to ensure proper fit. You may also need to measure the stem, the space between the headset and the handlebars, as well as that of the crankset.
Finally, make sure you take measurements of the wheels. Check that the wheel diameter matches the manufacturer’s recommendation. You will also need to measure the width of the wheels, usually between 20 and 25 mm. Profiles of the rear and front wheels may also need to be taken, if applicable. Once you have these measurements, adjust the components to fit the frame.
Tracking and recording your measurements is a great way to track your progress when it comes to getting the perfect mountain bike frame for your needs. Taking your time to make sure you get the measurements right will also help make sure your bike performs optimally. With that in mind, use the tips provided above to help make sure you get the most out of your new mountain bike.