Originally Posted by
Bezalel
I wouldn't trust the published specs. they say 7000 series aluminum but the decals on the seatstay say 6061.
I don't think these holes provide any functionality.
Well, they do, but only in a structural sense. They make the welding area larger, strengthening the joint between the dropout and the chainstay/ seatstay. Great place to accumulate mud, too.