Quote Originally Posted by Miranda View Post
Thx for the replies.

I asked the lbs about just getting a 39 ring with the current 50 and the bolt pattern /sizing is not the same. It will not fit. Thx for the link that's posted... but has same issue... states will only work w/52 ring.
You can use the 38 with a 50. You don't have to use it with a 52; that's just a suggestion (a 14 tooth jump is typical of a road setup). They make all those various chainrings so people can pick what combo they want. Running a 50/38 means you'll have less of a jump between gears when you go between chainrings. SRSLY