My gravel bike has GRX Di2 so I feel like it “should” have Ultegra level chains and cassettes, but is there any benefit other than weight? Cassette: From what I can tell, the Ultegra might have a nicer looking lock ring and save some grams. Is there any noticeable difference in durability? I’m not …

Ultegra vs 105...chains and cassettes

Dave May 21, 2021, 1:13pm 3

Apart from weight there’s no noticeable difference between the two.

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