Old 02-22-19, 01:47 AM
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Few quick noticeable differences of these little cranks. I switched from 165 to 155 (Carelton's pic above) few seasons ago:

* Higher peak cadence (20-25rpm net gain).
* Higher saddle height; more aerodynamic position.
* Higher effective gear (old 92" becomes 95-96" roughly).
* The need to reglue chainring bolts every 2-3 months!

It boils down to personal preference after everything is said and done. However, metrics tend not to lie. Hope this helps!
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