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11 Comments

  1. Yeah, some of those cog teeth are looking pretty wave shaped. Does it skip under load when you put a new chain on?

  2. You can see a lot of wear created by the chain on the first four cogs… I would change this out without hesitating. If you put a new chain on it. It’s probably going to jump under load.

  3. NegotiationOk174 on

    Always change cassette and chain together. They have to get worn in. Adapt to each other.

  4. Mundane_Basil_6559 on

    Thank you everyone, what do u think about these?

    ![img](330vjrnrbgte1)

  5. onceanmxernowamtber on

    Usually one can get 3 chains to 1 cassette if you replace the chains once they get to 0.5 wear. Regular chain maintenance will extend their life. The greater the number of cogs in the cassette, the shorter the life of them and the chain.

  6. To me it looks brand new. They’re sorta shark fin shaped from the factory, except for every like 5 teeth which is more pointy. 

    Google images of the ultegra cassette and you’ll see

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