Originally Posted by
Sonofamechanic
I wouldn’t say its one of Klein’s “lower models”…yours was the top of the line road bike at the time—a few years later they transitioned to internal cable routing and split the Quantum line into Pro and Race.
Klein had internal shift cable routing late 80's. My '89 Quantum had downtube shifters mounted on a bracket on top of the downtube, the shift cables then fed internally to the derailers. They were a PITA to change and you could not install STI housing stops. My '95 Quantum has the shift mounts on the side of the downtube, where you could install STI housing stops as desired.