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How-to guide

How to bleed Magura MT disc brakes

Fill and bleed Magura MT disc brakes with Magura Royal Blood mineral oil using the EBT method, which always fills at the caliper, with torque values.

Last edited Nov 9, 2026 by Pedalwise team Edit History Add a subpage

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Difficulty
Difficult
Time
45 to 90 minutes

Magura's MT brakes are found on many e-bikes, from e-MTBs to cargo bikes. One procedure covers both filling and bleeding, with a filling syringe at the caliper and a bleeding syringe at the lever's EBT bleed hole (Magura MT manual). Newer Magura models can differ, so check the manual for your brake and year. For the basics, see bleeding hydraulic disc brakes.

Brakes are safety critical. Magura MT brakes take MAGURA Royal Blood mineral oil only, and never DOT fluid (Magura MT manual). Never mix fluids or reuse a DOT kit.

A specialist shop should handle installation and maintenance. Don't ride if you notice damage, leaks or odd noises (Magura MT manual). Test the brake away from traffic before riding.

When a bleed is due

Bleed only when the brake responds slowly, the pressure point feels spongy or keeps moving, or a hose was changed. Royal Blood doesn't age, so there's no routine bleed interval (Magura MT manual).

What you need

  • A Magura bleed kit with a filling syringe, a bleeding syringe and a barbed fitting, see brake bleed kit
  • MAGURA Royal Blood, see mineral brake oil
  • Magura's transport device (bleed block) for your caliper, two on a 4 piston caliper
  • Torx keys and hex keys to fit your brake, a torque wrench that reads low values, rags and isopropyl alcohol

Steps

All steps and values here are from Magura's MT manual (Magura MT manual).

1Thread the barbed fitting into the filling line by hand

Fill the filling syringe with Royal Blood with no air in the syringe or line.

2Step 2

Pull the bleeding syringe piston fully out so its base sits above the small bleed bore.

3Step 3

Turn the BAT pressure point dial fully toward Plus, if your lever has one.

4Step 4

Remove the wheel, press the pistons fully apart, remove the pads, refit the pad locking screw and lock the transport device between the pistons.

5Hold the caliper upright

Unbolt it if the stand gets in the way.

6Step 6

Remove the filler plug from the caliper and screw in the filling syringe's barbed fitting, 4 N·m.

7Step 7

Loosen the lever clamp, turn the lever so the reservoir is level, and retighten it to 4 N·m.

8Step 8

Remove the EBT bleed screw from the lever and push the bleeding syringe firmly into the hole.

9Step 9

Slowly push oil from the filling syringe through the system, tapping lightly on the caliper and lever. Flick the lever two or three times so bubbles rise into the bleeding syringe. Repeat until no more bubbles come up.

10Step 10

Cover the bleed bore, push the plunger just past it, and pull the bleeding syringe out with the tip up. Push a little more oil through so the bleed hole is just full.

11Fit the EBT bleed screw to 0.5 N·m, a very low value, so go gently

12Step 12

Lift the caliper above the lever if you can, remove the filling syringe, and close the filler hole quickly, 4 N·m.

13Step 13

Clean off all oil, pull the lever several times, and check for leaks and a firm pressure point that doesn't drift.

14Step 14

Refit the pads (pad locking screw 2.5 N·m) and the wheel, put the lever back in its riding position, and set the pressure point.

Common mistakes

  • Filling at the lever. Always fill at the caliper, never at the brake lever.
  • Squeezing the lever with the wheel out and no transport device fitted, or with a hose disconnected.
  • Riding on pads that got oil on them. Never use contaminated pads, even after cleaning. Degrease the rotor before riding. See replace disc brake pads.
  • Using a pressure washer on the brake.
  • Pouring old oil down a drain. Dispose of it legally.

Videos

Filling/bleeding of a MAGURA disc brake (MT8, MT6, MT4, MT2) from MAGURA: the EBT fill and bleed on MT brakes.
MAGURA Disc Brakes Bleeding, Universal process (from MY2015) from MAGURA: the procedure for 2015 and later brakes.
How to Bleed Hydraulic Brakes, Magura from Park Tool: a step by step Magura bleed.

When to get a pro

  • The pressure point is still soft or drifts after a bleed, or oil seeps from any fitting.
  • After a crash, if you see damage. Don't ride it.
  • A hose needs replacing or shortening.
  • Your lever has a motor cutoff sensor and you can't confirm it still works, see check brake cutoff and throttle and when to call a pro.

Sources

Stuck after these checks? Find a shop near you.

Need a pro?

If these steps didn't fix it, find a shop near you in our partner network. For battery or wiring trouble, look for shops marked Battery and electrical.

Talk

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