Normaly for a 2stroke it's suggested that in a steel sleeve you'd use chrome faced ring's and in a chromed/nikisil cylinder you'd use steel or cast iron ring's and this is because the disimular metals work better together.Also there is the heat difference in a four stroke compared to a 2 stroke.
Normaly for a 2stroke it's suggested that in a steel sleeve you'd use chrome faced ring's and in a chromed/nikisil cylinder you'd use steel or cast iron ring's and this is because the disimular metals work better together.Also there is the heat difference in a four stroke compared to a 2 stroke.