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Wasn't keen on it at all at first. But the four arm pattern with these angles makes a lot of sense, and after a while it started to make ye olde five bolt cranks look a bit silly and unoptimised to me.
This first of the four-bolt road cranks from Shimano seemed to be a definite departure from their modern tendency to make their cranks fugly as sin. Every aspect seems to have a point beyond mere styling, except for that black scoop on the arms, which is the only bit that still bugs me.
I can't believe it took until page 11 for 9000 to rate a mention. Took a while to grow on me, but after a few years this bold design is looking pretty good, definitely a classic.
Not a fan of the bonded construction though.