This area will be continuously expanded according to your questions.

Do I have to buy Y-MOUNT and the accessories separately?

You first need the Y-MOUNT to be able to use the Y-Mount accessories. All accessories are compatible with the Y-Mount.
Does the Y-Mount fit my saddle / bike?

We have designed the Y-MOUNT to fit most saddles and seat post combinations. Please check the clamp width of your seat post and the distance from the bottom edge of the seat stays to the bottom edge of the clamp head before ordering. You can find the dimensions of the Y-Mount here
What do I need to consider during installation?

Please use a torque wrench and adhere to the specified torques. For assembly you will need a Torx wrench size 5.