Join Date: Jun 2010
Location: NW,Oregon Coast
Mentioned: 6 Post(s)
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Tiagra is one of the lower rank of Shimano's parts lines.
Campagnolo company has several price points of their component offerings, too,
but I don't know that un offered information .
More research needed , do get back when you can describe all the parts that may have been installed..
Of course, unlike a Porsche or VW on a bike the engine is You, not exploding gasoline.