20/04/2021
Sometimes we receive some questions like this : Is it hydraulic or mechanical?
Both. The brake is filled with mineral oil. brake wire pulls the main piston, and the main piston hydraulically drives the two sub-pistons.
Don't worry about the piston
Yes, we have noticed that some buyer say that only one side of the piston will move. I think we need to explain something. (unexpectedly that so many road bikers use hydraulic disc brakes for the first time), this is very common for hydraulic disc brakes, No matter it is an MTB or a road bike brake, no matter how advanced or expensive your brakes are, all hydraulic brake systems and even vehicle brake systems will have such things happen, but at the same time it is very easy to solve.
In general, you just need to hold the moving side, which will make the lazy side move, and then give the piston a little lubrication. Repeat a few times. It only takes one minute to solve this problem.
A famous blue tool brand has a video to teach you how to solve it, but we can't write a link here due to copyright reasons. You can search by yourself or contact us to get the video link. So don't worry, these brake working good .
