I believe it's a 22mm bolt.
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Scamper said:Well, since a 30mm socket worked, I guess it's a 30![]()
I got the 22mm size from the TRD/Kazuma installation manual. It says on the parts page as well as the section regarding the crank bolt, that it's a M22-1.50 x 90mm bolt. Likely the original Toyota bolt is the 30mm jobber.