Mushy Front Brake Syndrome - I may be on to something (turns out not)...

[imcool]

found another one as well

Brembo 16mm Front Brake and Clutch Master Cylinder Repair Kit for Ducati Aprilia KTM… - Addiction Motorsport Ltd

Brembo 16mm Front Brake and Clutch Master Cylinder Repair Kit for Ducati, Aprilia, KTM, etc. Genuine Brembo front brake and clutch master cylinder revision / repair piston kit. To be used to repair Brembo PR16 radial master cylinders. We will strongly suggesting stripping your master cylinder...

addictionmotorsport.co.uk

 

[Journeyman]

I hope you're right. You listed different diameters. Maybe if one of those bikes that the kit goes to matches the bikes using the same calipers as the Rocket it might be more likely to be the right size. Here's the chart of matching calipers...

If you get a rebuild kit and it fits I, for one, would sure like to know.

If you put in your bike on the Brembo website and go to calipers, there's a link to "compatible vehicles" and it lists Aprilia, Ducati, and Triumph. Should be a kit for one of these out there. Put in your year in case there is a difference (doubt it) for newer bikes. Here's what I see....

Front Brake/Clutch Master Cylinder Rebuild Kit?

Measure pucks and order seals, 30mm probably but seals for calipers as mentioned calipers are available.

www.r3owners.net

 

[imcool]

I hope you're right. You listed different diameters. Maybe if one of those bikes that the kit goes to matches the bikes using the same calipers as the Rocket it might be more likely to be the right size. Here's the chart of matching calipers...

If you get a rebuild kit and it fits I, for one, would sure like to know.

If you put in your bike on the Brembo website and go to calipers, there's a link to "compatible vehicles" and it lists Aprilia, Ducati, and Triumph. Should be a kit for one of these out there. Put in your year in case there is a difference (doubt it) for newer bikes. Here's what I see....

Front Brake/Clutch Master Cylinder Rebuild Kit?

Measure pucks and order seals, 30mm probably but seals for calipers as mentioned calipers are available.

www.r3owners.net

I’m not actually looking for a rebuild kit—I was just curious and trying to help the community identify possible replacement parts.


If you happen to open the MC again, it would be really helpful if you could take some measurements and share them. That way, we can at least try to match the correct size in case someone here ends up needing a rebuild kit.

 

[Journeyman]

Update on this great idea of mine.... well, not so great. it has returned to its previous state. Here's what I think is happening......
I’ve heard it explained that tying up the lever overnight forces the air bubbles into smaller (atomized?) particles that are less compressible, but they soon gather back. I was hoping that by opening the MC before releasing the lever it would let that air escape, but it really hasn’t worked. It’s not like it forces the big bubbles to the top, but just disperses them into super small molecules. That's why when I open the valve to bleed the MC I didn't get any bubbles. Oh, well, guess it's time to rebuild the calipers and, eventually, either buy a new MC or find a rebuild kit from another bike with similar internals (not sure it exists).