Thread: Crank arm length 170 172.5 175 whats the difference?
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Old 04-19-08 | 07:17 AM
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Retro Grouch
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From: St Peters, Missouri

Bikes: Catrike 559 I own some others but they don't get ridden very much.

When I ordered the compact crank for my Klein the 172.5 size wasn't available but I could immediately get the 175 size. I worried myself to death but decided to take a chance on the 175. Honestly, I can't tell a difference. How much difference can 2.5mm make?

I'm 5'10", by the way, so that's right on the average for American men.
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