Originally Posted by HyperB5

I'm mostly concerned about the O.D.! On AMain, it says that the O.D. of the Go front bearing is 18.6mm. I've read that the Nova front bearing fit the Go engines from a few years ago and was wondering if this was true with the newer mills. It's seems odd that Go would use a non standard O.D.! I've never actually mic'ed a Nova bearing to see if it had a full 19mm diameter. I might have to pull apart the Plus 4 to check.

Thanks!