bottom bracket ID

by road ronin   June 7, 2012  

Excuse my stupidity but how do i know if my bottom bracket is british or italian thread??

not sure if this information helps its a shim hollowtech ultrega in a ridley noah rs frame Thinking

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English has one right and one left hand thread/Italian is right hand thread both sides:

ISO/English or BSA 1.37 in x 24 TPI 34.6-34.9 mm
Left-hand thread drive side

Italian 36 mm x 24 TPI 35.6-35.9 mm
Right-hand thread both sides

ColT's picture

posted by ColT [266 posts]
7th June 2012 - 19:32

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thank you for that so simple. i have English

thank you once again.

Pain is weekness leaving the body

road ronin's picture

posted by road ronin [57 posts]
7th June 2012 - 20:15

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