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How to determine your proper frame size?

To determine your proper frame size, you’ll first need to measure your inseam. This measurement should be made with someone assisting you to ensure accuracy.

Inseam Measurement (measurement i)
1. Be sure to take this measurement standing straight up on a hard surface, in bare or stocking feet, with your feet 4" apart and with your weight evenly distributed. This measurement is most comfortably taken while wearing your riding shorts

2. Measure a vertical line from the base of the pubic symphysis to the floor. Placing a book or suitable object in the crotch area and exerting a slight upward force will provide proper reference.

3. Ensure the tape is absolutely perpendicular to the floor, running straight down from the upper edge of the book to the floor.

4. Repeat measurement three times, for consistency, and average the results to get your inseam length.

5. With the inseam length, use the following formula to calculate your optimal fit frame size:

Inseam * 0.67 - 4.2

Round the calculated result to the closest frame size available for the respective Exodus model you are purchasing.


How to determine the proper upper body fit?

Torso length and arm length when considered together is the best indicator for the proper top tube length and handlebar stem length necessary to achieve an efficient and comfortable upper body position for bicycling. The result of these measurements and subsequent calculations will validate the frame size determined in step one, in addition to providing a realistic determination of the stem extension that should be used with the frame. These measurements should be made with someone assisting you to ensure accuracy.


A. Torso Measurement (measurement t)


1. Be sure to take this measurement standing straight up with your feet 4" apart. This measurement is most comfortably taken while wearing your riding shorts.

2. Locate the "sternal notch" (the V-shaped notch between the collarbones).

3. Measure a vertical line from the base of the sternal notch to the base of the pubic symphysis referenced by placing a book in the crotch and exerting a slight upward force.

4. Ensure the tape is absolutely perpendicular to the floor, running straight down from the base of the sternal notch to the top of the book.


5. Repeat measurement three times, for consistency, and average the results to get your torso measurement.

B. Arm Extension (measurement a)


1. Be sure to take this measurement standing straight up.

2. With your arm outstretched and your thumb pointing up, locate the center of the bottom knuckle of your thumb. This reference is the knuckle closet to the web between the thumb and forefinger of your hand.

3. Measure the distance from the center of the knuckle to the inner wall of your armpit preferably touching your rib cage.

4. Repeat measurement three times, for consistency, and
average the results to get your arm extension.

With t and a, the following formula determines the proper stem extension for you:

((a + t)/2 + 3.15) - Effective Top Tube Length (in inches)

 

 

 

 

 

 

 

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