The Cervelo top tube cable guide (CVR-TT-P5) fits the P2; P3 and P5-Three triathlon and time trial bikes. This guide fills the gap at the front of the P-series top tube and does not work with any other bicycle. 

• The cable guide is not needed with the P5-Six when using the Aduro aerobar.
• Comes with the cable guide and necessary hardware to secure to frame.