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Thomson Seatpost Collar

ThomsonSeatpost Collar(Return to Product Page)

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2mm head bolt is easy to strip
by old1
Cycling Enthusiast
Atlanta, GA
1 of 1 customers found this review helpful.

Clearly a high quality piece, but it did not work for me. I am using a carbon seat post in an aluminum frame , so I have to install the clamp in a 'reversed' position with the bolt of the clamp on the front side of the post, opposite to the flexible open part on the rear part of the seat post. The recommended 2.8nm torque spec was not enough to keep the seat post from slipping. Applying just slightly more torque caused the tiny 2mm headbolt to strip, meaning a trip to the bikeshop to have it drilled out. 2mm is just too small. I switched to a clamp with a 4mm headbolt and all is good now.

Reviewed 2/22/2022
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