Klein internal shifter cables on the downtube didn't come around until STI got popular... pretty hard to do with downtube shifters, maybe some of the Performance (touring) bikes had it for bar end shifters but I haven't seen it.

Internal rear brake cable on the top tube was only on the higher end Kleins in the mid 80's.

Internal rear derailleur cable in the seat stay is pretty rare.

This ad is from 1990.



Steve and Lurker - send me photos and serial numbers please!