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Old 07-15-15 | 08:41 AM
  #7  
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spdracr39
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Joined: Feb 2014
Posts: 1,538
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From: Cabot, Arkansas

Bikes: Lynskey Twisted Helix Di2 Ti, 1987 Orbea steel single speed/fixie, Orbea Avant M30, Trek Fuel EX9.8 29, Trek Madone 5 series, Specialized Epic Carbon Comp 29er, Trek 7.1F

Seat post or rail mount behind the seat. You can get single or double then when your primary goes empty just switch it out.
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