How do I determine the correct frame size?

  1. Measure your inside leg:

    The step length is the length of the inside of the leg. The best and most accurate measure of your stride length is by using a spirit level and a tape measure. If you have no spirit level to hand a book or similar works as well. Now, position yourself barefoot (!) on a flat surface and clamp the level (or the book) as level as possible between the legs and pull it upwards until it becomes gradually unpleasant. Now measure the distance from the top of the level to the ground. The reading corresponds to your stride length.
  2. Determine the right frame size:

    • For a Road bike: Multiply your inside leg by a factor of 0.665. The value that you get is the theoretical frame height in cm. For a Triathlon bike subduct 3cm of your value.
    • For a Mountain bike: Multiply your inside leg by a factor of 0.226. The value that you get is the theoretical frame height in inches. Multiplied by 2.54, you get the frame height in cm.
    • For trekking bikes: Multiply your inside leg by a factor of 0.66. The value that you get is the theoretical frame height in centimeters. Multiply by 0.259 to get the frame height in inches. With suspension seat posts deduct about 5 cm (or 2 inches) from the theoretical size. If your value is between two offered heights, apply the following rule of thumb: Choose the smaller frame size for sporty driving style. A larger frame results in a more comfortable seating position.
  3. Determine the framesize by your body size:

    Alternatively you can determine your framesize also about your body size. However, the method of the step length is more accurate.

Framesize road bike*:

Body sizeFramesize
155-165 cm48-51 cm
165-170 cm51-53 cm
170-175 cm53-55 cm
175-180 cm55-58 cm
180-185 cm58-61 cm
185-190 cm61-63 cm
190-195 cm63-65 cm
195-200 cm

65-... cm

Framesize mountain bike*:

Body sizeFramesize in inchesFramesize in cm
155-165 cm14-15"35-38 cm
165-170 cm15-16"38-41 cm
170-175 cm16-17"41-43 cm
175-180 cm17-18"43-46 cm
180-185 cm18-19"46-48 cm
185-190 cm19-21"48-53 cm
190-195 cm21-22"53-56 cm
195-200 cm22-23"56-58 cm

Framesize trekking bike*:

Body sizeFramesize
155-165 cm47-50 cm
165-170 cm50-52 cm
170-175 cm52-55 cm
175-180 cm55-58 cm
180-185 cm58-61 cm
185-190 cm61-63 cm
190-195 cm63-65 cm
195-200 cm65-... cm

*All the aforesaid values are only guidelines. For questions regarding the right framesize, please contact one of our authorized CUBE dealers.

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