Mount for Specialized Tarmac SL8 / Tarmac SL9 (lower section) / Crux 5 (MY27+) Style:For Garmin Varia (RTL515 / RVR315 / RearVue 820) / Cycplus L7 + AirTag combo The only compatible solution is

The only compatible solution is a saddle rail mount

2mm round seat post

click in the tool-free locking mechanism and insert/twist the holder into your Concentric Cycling Seat Post Mount

Please note that this mount is not compatible with the SL Gen 3 Seat Mast

Mount for Specialized Tarmac SL8 / Tarmac SL9 (lower section) / Crux 5 (MY27+) Style:For Garmin Varia (RTL515 / RVR315 / RearVue 820) / Cycplus L7 + AirTag combo The only compatible solution is3D printed seat post mount perfectly dimensioned for the Specialized Tarmac SL8, Tarmac SL9 (lower section of post only) and the new Crux 5 (MY27+). Note: If you have a Tarmac SL9 and would prefer the mount to fit on the upper section of your seat post, please purchase this mount. Manufactured in Australia from Carbon Nylon for strength, durability and heat UV resistance. Supplied with high quality blackened stainless steel fixings (M4 20mm bolt and