Thread: Noobie Question about Geometry: What is EFF toptube?
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Old 08-13-09, 03:59 PM
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Dominion
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Noobie Question about Geometry: What is EFF toptube?
I'm looking at the trek website

http://www.trekbikes.com/ca/en/bikes...es/elite99ssl/

When looking at the geometry specs, I'm unclear what the EFF top tube is. I understand a top tube is the tube that goes from top of head tube to seat tube. What does the EFF mean?

Thanks!
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