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Old 01-30-17, 08:05 PM
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mstateglfr 
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Originally Posted by dedhed View Post
More likely about the less complicated die, less holes to drill/tap, one less chainring bolt to buy/assemble.
Yes, it saves on a chainring bolt per crank.

The 4 arm shimano hollowtech II cranksets are advertised as lighter and stiffer than the 5 arm predecessors. Its been measured, both weight and stiffness. Gotta get that power transferred, no matter how incremental the gain.
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