Question: how to bleed slx shimano brakes?
Answer: First remove the pads and push the pistons back into the caliper. ...  Carefully thread on the Shimano bleed cup. ...  Open the bleed valve or nipple and push on the bleed hose. ...  Push fluid into the system using a syringe. ...  Attach a bag to the end of the hose using a zip tie. ...  Close the valve/nipple and remove the bleed hose.