OS: |
Offset, eye center is off the back of the fork. |
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The desired measurement is from the eye center to the back of the fork. |
IS: |
Inset, eye center is in front of the fork back. |
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The desired measurement is from the eye center to the back of the fork. |
RS: |
Rearset, the eye is set on the fork back. |
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The desired measurement is from the eye center to the back of the fork. |