Originally Posted by
EjustE
No such a thing as a 6 sp Hyperglide
*Ahem...*
http://www.amazon.com/Shimano-6-Spee.../dp/B003EQ71QI
FYI, OP has a 6-speed Regina freewheel. His rear drop spacing is more than likely 126mm. Mind you though, the touring frame shown in my earlier post has 120mm spacing - I'm guessing Klein did that to the models designed for touring - less chance for axle breakage.
-Kurt