Switching a Cervelo from electronic to mechanical shifting, or replacing a damaged cable guide during a frame overhaul, requires the correct frame-specific hardware. The Cervelo Cable Stop for Mechanical Disc Brake serves as a downtube cable guide that routes mechanical shift cables and hydraulic brake hoses through the frame's internal passages. This isn't a universal part—it's shaped specifically for Cervelo's internal routing architecture and clips into place without tools.

The cable stop mounts at the downtube port where shift housing terminates and bare inner cables continue toward the bottom bracket area. For hydraulic brake setups, the same guide accommodates the brake hose routing alongside the shift cables. The design keeps everything organized and prevents cables and hoses from rattling around inside the frame or rubbing against internal surfaces. When cables and hoses move freely inside a frame, you get noise, accelerated wear on both the housing and the frame's internal finish, and inconsistent shifting feel as the cable path changes under load.

Compatibility covers several Cervelo platforms: C-Series frames, R3 Disc and R-Series Disc models from 2016 to present, plus Caledonia and Caledonia-5. If you're working on one of these frames and need the mechanical version of this guide—as opposed to the Di2 electronic version—this is the correct part number. The two versions look similar but have different internal configurations to accommodate either traditional shift housing or the thinner Di2 wire routing.... Read More