Cervélo S5 Cable Guide Parts: Match Mechanical, Wired and Wireless Shifting Ports
Cervélo S5 cable guide parts are selected according to the historical bicycle's shifting system. The 2019 retailer manual shows several pieces around the rear dropout, but it does not say they should all be fitted together. Identifying their different jobs is useful when a used frame arrives with loose hardware or when a retailer prepares a documented rebuild.
Cervélo S5 cable guide parts at the rear dropout
For mechanical shifting, the manual identifies the press-in cable stop CBS-DRPOUT. For a wired electric arrangement, it shows GR-DRPOUT-GUIDE. For wireless shifting, it names the blanking plug GR-DRPOUT-CLOSED. These three references distinguish a cable stop, a wire guide and an unused-port closure. Similar locations do not make their functions identical.
An inventory should therefore record the groupset and the part currently occupying the rear exit. If the opening is empty, photograph it and list the intended shifting arrangement for the workshop. Ordering all three pieces without identifying the system creates a longer shopping list while leaving the underlying selection question unanswered.
Separate port hardware from battery compatibility
The same manual identifies BBG-0E0 as the bottom-bracket cable guide or cover. Its mechanical and electric sections show how that part relates to their respective routing arrangements. It is useful context for an incomplete frameset, but the presence of a common cover does not mean that the rest of the wiring, housing or controls can be carried over unchanged.
Printed page 28 describes a Shimano Di2 battery mounted inside the down tube using MT-BINT. It calls for testing the system before its final placement in that enclosed location. This is a historical installation description. It does not establish compatibility with every later Di2 battery, wire standard or groupset simply because the product names share Di2.
Give the retailer an exact component list, photographs of the available frame hardware and any previous wiring information. Ask which port pieces and mounting components belong to that confirmed setup. The manufacturer intended this manual to supplement component instructions, so a frame-routing illustration cannot replace the requirements for the actual shifting equipment.
FAQ: inventorying a shifting conversion
Is the wireless blanking plug the mechanical cable stop?
No. GR-DRPOUT-CLOSED closes the rear opening for the documented wireless arrangement; CBS-DRPOUT is identified for the mechanical cable installation.
Does MT-BINT certify every modern Di2 battery?
No. It is the mount named in this historical manual's described installation. The actual battery, wiring and system requirements still need confirmation.
Should every small part illustrated on page nine be installed?
No. The manual explicitly says the required pieces depend on the groupset. Start from the intended system and identify each necessary component.
Find the historical family within the Cervélo topic and keep the brake-hose routing context separate. A clear frame-port inventory helps the workshop plan the work without turning shared openings into unsupported system compatibility.
Documents: Mk3 archive (https://www.cervelo.com/en-US/support/S5%20DISC%20MK3); 2019 retailer manual (https://cervelo.cdn.prismic.io/cervelo/11dde2fb-eedb-4098-800b-ab198fb9eef6_s5_disc_manual_v5.7_web_1_.pdf).
Photograph credits and permissions
Photograph 1
Original title: Cervelo S5
Creator: Glory Cycles
Original source URI: https://commons.wikimedia.org/wiki/File:Cerv%C3%A9lo_S5_(2019)_-_03.jpg
License / permission: CC BY 2.0
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