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What are you doing on the bike?
That bike looks like a Tri-Bike. The geometry is different than a standard road bike.
The wheels are carbon. While light, they are fragile. Not wheels for regular riding.
Di2 is an electronic shifting system, no cables. IF anything goes wrong, it will not be fixed, except by a mechanic that specializes and stocks the parts. If you work on your own bike, it is a step up in complication.
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James
The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994)
Red-beard for President, 2020
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