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Old 11-21-16, 09:20 AM
  #22  
stevelewis
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Location: Goleta, CA
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Bikes: 2015 Trek Madone 2.1, 2015 Niner RLT 9 2-star build, Vintage Trek Road bike

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Okay, the chain is HG701 which is the ultegra 11 speed chain. So that's not the problem.

Regarding the freehub possibility: when the slippage occurs, I hear a loud "gear crunch". Is that symptomatic of a free hub issue?
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