what chain?

[yamiman]

i have 8 tooth drivers cause i go out west once or twice a year, now i want to gear it equal to a 21/38 with nine tooth drivers, my question is will i have to go to a 70L chain to put on 24/38 gearing?

 

[watersuper]

Check the chart on Maximum Performance web site.

 

[yamiman]

thanks!