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Discussion Starter · #1 ·
Does anybody have any experience with fitting a 27.2 seatpost to a '06 MKIII? I'm trying to get a Thomson Set Back post to fit. IH had informed me that the inner diameter of the seat tube is 30.8, but a 27.2 to 30.8 shim came out to tight. The bike was originally shipped with a 30.0 post, which seemed a little bit loose. The correct size might be somewhere inbetween. Did anybody exchanged his post for a 27.2 and can give me some guidance on the right shim size.

Thanks for your help.

P.S.: Once the post is fitted my trail bike should be ready for its virgin test ride. I'll post some pictures before I get it all dirty ;)
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