Cylinder Sleeves

[BMW]

Do All Bikes Come with cylinder sleeves? I have a 2001 honda cr250r. I was wondering if it has a cylinder sleeve in it or not. i cant take it apart bcuz i never have the time. If someone could give me an answer it would be greatly appreciated :cool:

 

[Tom68]

No decent bike has had a cylinder sleeve for 20 + years.

 

[RM85rider123]

I think they mostly consist of being made with nickel-alloy. It's a stronger material.