Spare Part for Trek CarBack / Bontrager Flare RT + AirTag combo Seat Post Model:For Canyon Endurace / Ultimate Gen 4 / Inflite / Grizl / Grail Gen 1 (VCLS 27.2mm) Standard - Suitable for most

Standard - Suitable for most bicycle computers (up to and including the Hammerhead Karoo)

If you are having clearance issues between your computer mount

You can find the the Mk2 version here

Mounts for the new MY27 Infinito coming soon

Spare Part for Trek CarBack / Bontrager Flare RT + AirTag combo Seat Post Model:For Canyon Endurace / Ultimate Gen 4 / Inflite / Grizl / Grail Gen 1 (VCLS 27.2mm) Standard - Suitable for mostHave you purchased a complete seat post mount or race number holder from us? Would you like to exchange the mount to another design, while continuing to use the same seat clamp? No problem! You can now purchase these components separately :) Simply select your bicycle seat post model and we'll do the rest. Please Note: This item is for the light mount only. The seat post clamp is not included.