Buying a road bike can be confusing, especially once you start looking into component groups. The differences between the Shimano 105 and Shimano Ultegra can be slight, but understanding them can make choosing the right bike a lot easier.
Number of Gears
Both 105 and Ultegra are 10 speed drivetrains. Their individual components are compatible with each other and with most Dura-Ace components. Both are offered with a triple, compact or traditional crankset, giving you a wide range of gear ratios from which to choose.
Weight is the No. 1 difference between 105 and Ultegra components. Ultegra components weigh around 200 grains less than 105. It can vary depending on the year of the components and how the bike is configured. Whether weight matters to you will depend on what type of riding you'll be doing. Racers will benefit more from lightness than recreational riders.
Both 105 and Ultegra components are extremely reliable and well made. Ultegra is manufactured with moderately superior workmanship, but 105's extra weight makes up for its slightly less refined nature.
Ultegra costs around a third more than 105. Price differences will vary from component to component. Ultegra equipped bikes will hold their resale value better.
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