Re: New to cycling
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Much better. They have better quality bushings in the deraileurs, better quality chain and sprockets, bearings in the brake pivots instead of bushes and will tolerate moderate to high mileage much better.
Function is similar to 105 but Ultegra retains its optimum function a lot better, 105 will lose function more rapidly as the lower quality pivot points wear and become sloppy.
Ultegra also has a reasonable weight saving too.
In the Shimano upper levels the line up is 105, Ultegra and Durace. The difference between Ultegra and Durace is often questioned because in terms of quality the difference is not huge. The difference between 105 and ultegra is a different story. Put it this way, I would love to find a cost effective way to get my daughter off her 105 equipped bike and onto a Ultegra equipped bike.
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