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Failed DuraAce SP7410 Seatpost

DuraAce SP7410 seatpost. This is 2-piece design with a clamp head inserted in a tube.

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Photo: yellowjersey.org

Failure noticed when seat fell off.

Rider weight about 70 kgf, vigorous rider. Usage history unknown.

The seatpost was corroded in the frame, but was removed without frame damage.

See also FAIL-200.html.