I Googled and googled. Shot TA an e-mail. No reply. Most online shops qualify it as a JIS taper, but quite a few sources claim it is ISO.
I want to use this BB for a Weight weenie project and I am not ready to splurge on a Phil.
I test fitted my crank with a 113mm Kinex JIS BB and chainline is perfect. So now I want the weight savings and go for the TA. But no one seems to know for sure! This is killing me! If it turns out to be ISO, The crankset will definately hit the BB drive side cup.
So, does anyone have absolute proof that this BB uses a JIS taper?
I would be very grateful!