My early 90s Merlin road frame got that titanium spindle and I wonder whether it is JIS or ISO square tapered. According to the catalogue the name of the bottom bracket is "Beta-C"
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4Does this answer your question? How can I tell the difference between a J.I.S. and ISO square taper bottom bracket?– Weiwen NgCommented May 13 at 23:25
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1This website suggest that it's JIS, you have to scroll down to sixth comment in the post: bikeforums.net/bicycle-mechanics/…– MindDBikeCommented May 14 at 7:03
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