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Upgrading crank: 53/39 or 50/34?

3K views 3 replies 4 participants last post by  homebrew 
#1 ·
Hi from Maryland. I am upgrading the cranks (and drivetrain) on a Specialized Tarmac to Ultegra. I am a novice rider, but strong enough to run sub-2 hour hallf-marathons and finish in the 50's (percentile) in my ole' man age group on triathlons. The bike is my weakness in my tri racing. 18-19 MPH over 24 miles would be great. I would describe myself as a recreational but enthusiastic cyclist.


What cranks and cassette should I get for hilly Maryland? Benchmark seems like 53/39 with 12/25. But I see a lot more compact 50/34's. Does it matter? Is it easy and cheap to change front crank rings? Anybody have opinions or coaching on this? I would describe myself as a recreational cyclist.

Thanks - Scott
 
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