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  1. Gen3 front/rear brake caliper piston size? Master cylinder diameter?

    2014-2018 Mazda 3 Skyactiv Suspension & Handling
    Anyone aware of what is the diameter of brake piston in front and rear calipers? Japan built cars. Also looking for the diameter of the master brake cylinder. Want to do some calculations....
  2. 2014+ Clutch master cylinder replacement / upgrade

    2014-2018 Mazda 3 Skyactiv Engine and Performance
    A project to upgrade the hydraulic transmission components on the BM 2014-'18 Mazda 3 6MT: Why? 1. I strongly dislike that Mazda has put plastic parts where I believe aluminum / steel should be used for strength, reliability and longevity. I want to replace it with a universal, easy to...
  3. Mazda 3 2011 master cylinder bleeding procedure

    Suspension / Brakes
    Hi everyone, I'm trying to bleed my master cylinder on a mazda 3 2011 and I see tha the master cylinder has 4 bleeding screws, just wondering what is the proper way to bleed this kind of master cylinders since is the first time I see one with 4 bleeding screws!! If anybody can help me on this I...
  4. Clutch issues from leaking brake master cylinder?

    2004-2009 Mazda3 Discussion
    Last week I noticed that shifting was getting more and more difficult, so as soon as I got home I checked the fluid level — sure enough it was extremely low. I check fluid levels weekly so a recent leak was my conclusion. On top of that, it seemed like the clutch pedal was beginning to feel a...
  5. WTB Broken 2014-2016 Clutch Master Cylinder

    Mazda 3 Parts - Buy / Sell
    I know this may sound strange, but I would like to buy a BROKEN or SPARE clutch master cylinder from a 2014 -2016 mazda3 (preferably a manual sGT just to be sure it is the same part I will be replacing on my own car). I need it to take measurements so that I can replace the weak plastic OEM part...
  6. Clutch master woes

    2010-13 Mazdaspeed 3 Engine and Performance
    What started as a simple clutch master cylinder leak in the cabin has now turned into an absolute s*** show. We've started by removing the OEM leaking one, however on installation of the new one it doesn't appear to be sealing where the clutch line for the slave cylinder plugs in. The line has...
  7. Recall question....software for the Connectivity Master Unit (CMU)

    2014-2018 Mazda 3 Skyactiv Discussion
    I'm looking at purchasing a 2015 but there's an open recall going on. Repair status is still incomplete. Should I worry about this? I don't know much about the software but it doesn't seem like a big fix. Why wouldn't a dealer just update the software?
  8. Possible Master/Slave Issue

    2010-2013 Mazda 3 Engine and Performance
    Long story shot, everyone here for sure knows by now that the second gen 3 has a finicky transmission. Some people report little to no issues, some people have had clutches "explode" etc. I've replaced my mounts all around, JBR 88a RMM, JBR 80a PMM, TRZ Transmission mount. I installed solid...