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Old 06-03-2008, 05:08 PM
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Quote:
Originally Posted by Silverback51 View Post

Kirkham.

3.0 diameter X .120 wall round tubing. The "I" value of this is 2.76 Inches to the fourth.
Per the Kirkham website, 4" round, not 3".

http://www.kirkhammotorsports.com/mfg/frame_index.html
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