39" would be better, a few people have used magic gear and it been ok but skips once the chain stretched,
have a look at this thread for gear inches guides http://www.lfgss.com/thread38580-6.html
@voidcore started
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39" would be better, a few people have used magic gear and it been ok but skips once the chain stretched,
have a look at this thread for gear inches guides http://www.lfgss.com/thread38580-6.html