Ultegra Brakes bleed screw - safety torx ???

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Pep

Well-Known Member
I wanted to bleed my hydraulic brakes, Ultegra.
I noticed under the plastic hood, the little bleed screw is not a "normal" hex, not even a Torx, but rather this one in the figure.
I'm annoyed, I didn't expect this and I don't have the tools at home yet.
Is this "normal"? Anyone encountered such a screw before? What's the format called?
Thanks,
Alberto
Thanks,

IMG_20250412_223447_154.jpg
 
I see these all the time at work.

Two ways to tackle it. First the correct w. Buy a set of security drivers, or even just the bits. E.g https://www.toolstation.com/draper-security-bit-set/p52910

Second way / bodge, it to take a small screwdriver and knock out the centre pin and then use a normal torx driver.
 
Location
Loch side.
Yes, the first way is correct but it is not the only solution.

I don’t recommend using the second way though I have seen it done when someone was caught out. The correct bits are not expensive but there are people out there that even a few £ might be more than they can typically afford.

I was too obscure. I liked the second way because I hate these proprietary screw heads popping up everywhere. Damn them. Why on earth should a bleeding screw have a security nib?

Also, the hollow torx bit needed is much weaker than a solid one. One one of my cars there was a 6mm or 7mm security torx screw on something that wouldnt easily come off. I've broken a nib or two on that until I fixed it the "second way".
 
Unless I'm misunderstanding your question I don't think what you're looking at is the bleed screw, the bleed screw is at the top above the levers (well it is on my Ultegra levers). It's a large black disc with a small hex shaped recess
 

Edward.s

New Member
that isn't the bleed screw.
 
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