Garmin Varia Seat Rail Mount Kit Description: Integrate the Garmin Varia with a more stable mounting system using the Seat Rail Mount Kit. The increased height when mounting from the seat rails makes the Varia more visible to approaching motorists. Solves the issue of securing the Varia to aero-style seat posts. Simply install to standard seat rails using a 4mm hex wrench. Features: Increased height of the Varia keeps you more visible on the open road Solves the stability issue when mounting to aero seatposts Installs with a 4mm hex wrench (not included) Includes: Seat rail clamp Friction flange mount extender Quarter-turn adapter Lever-lock adapter Two M4 bolts Compatibility: Varia RCT715 Varia RTL510 Varia RTL515 Varia RVR315