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  • I am very impressed with Tiagra, I have build quite a far bit of them in the shop and can't really notice any difference in shifting compared to 105, the only main difference is obviously the 11 speed and probably the weight.

    Another option is the Pinnacle Dolomite with full hydraulic disc brakes and decent geo for comfortable riding for a grand max (105 groupset too).

    full hydraulic make it a lots easier to slow down and take a lots less effort, something your dad might appericated?

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