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The 105 bike is about a grand cheaper. One of my bikes is 105 now and it is just fine, so that may be an option. I am intrigued by Di2 though but I have not ridden a bike with it yet...
I do race (duathlon and tri), and ride/train to race so the stiffness is not an issue.
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Turn3 Autosport- Full Service and Race Prep
www.turn3autosport.com
997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3
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