Disc brake hoses and bleed kits
A bleeding of the brake circuit is recommended annually (every two if you drive little)
It is not complicated but requires a little attention to detail. If you are a neophyte, we recommend that you take your bike to a mechanic.
To do this, take a bleed kit, the liquid recommended by the brand (mineral or synthetic "Dot"), small tools (screwdriver and size 6 open-end wrench) and gloves/protective glasses.
Be careful not to spray or pour oil on your calipers and discs!
Depending on the models, the bleeding procedure may change. Refer to the manufacturer's documentation beforehand.