!Attention: please check your original 11T thickness firstly whether they are same.
If you hear squeaks or noises from your drivetrain, you should check if your cassette cogs were weared out. You don't need to change the whole cassettes anymore, because you can easily find what you need from our shop.
Note
*Color: Due to the light or display difference, the color of the product you received might be a little difference from the pictures. That is not a quality issue.
*Size & Weight: Due to the measure error or insrumental error, the weight and size of the product might have a minor difference to the discription. That is not a quality issue too.
*Service: We are professional bike mechanics and good at English, so if you have any problem when you set up your products, please feel free to contact us. If you need a large amout of products, please contact us too. We will give you a discount. Don't jump ti a bad review, before you want to do that, just contact us and i think we will find a way to solve the problem.