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Not a modern 105 - Claris cranksets are octalink, 105 cranksets are hollowtech.


Predominately a weight thing. The Shimano marketing spiel / hyperbole: With a unique four-arm spider and Hollowtech II construction putting strength just where its needed, the FC-9000 chainset sets new standards for stiffness and low weight. ^^^ Shiny :) That and because I think it looks distinctive and is seen as innovation. Some people don't ...


These crancks are still very common on Dutch vintage bicycles. You can order them from many Dutch websites starting at about 6 euro's. All Dutch bicycle shops can order such a cranck at every wholesaler. Many even have such a cranck on stock. You may want to look for a Dutch website which is willing send it to the UK before you replace everything. This ...


It's hard to tell from the picture, but it looks like a cottered crank. I don't think anybody makes them anymore, but not all hope is lost. You can likely replace the entire crankset and bottom bracket assuming the bike has a bottom bracket which is still available, which is somewhat likely. It may cost more than you are willing to spend on the old bike ...

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