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I'm rebuilding my 2010 Giant Defy 3 and have no idea what size seat clamp I need. The original has been off a while and has spread and Google's no help

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SpeshRider7287 [73 posts] 3 years ago
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Seatpost is a 30.9mm so I would say you need a 31.4mm clamp buddy.

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crash144019 [45 posts] 3 years ago
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Thanks I'll try it