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Anyone fancy a research project? (Brake pads and retainer pin)

  1. #1
    Senior Member dhawks's Avatar
    Join Date
    Apr 2008
    Location
    Boston
    Posts
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    Anyone fancy a research project? (Brake pads and retainer pin)


    At some point during my final event of the season, I came back to the paddock without rear brake pads or retainer pin -- just a rear caliper in its normal place. Because the bike is relatively new to me, I hadn't spent any time with the rear caliper, so I don't really know exactly what is missing.

    What I know:
    --It's a 2-piston (piston is 34mm in outside diameter) Brembo rear racing caliper, stamped "8K23" on the caliper housing, and mounts under the rotor with a bracket that allows Japanese bikes to use this caliper. (see photos)
    --I use it on a 2009 Yamaha R6.
    --However, this particular R6 uses a lot of 2009 Yamaha R1 parts, including for example an R1 front end.

    What I think I know:
    --Seems like it's an old Brembo model "P2 34".
    --None of the photos I can find online suggest that there were any clips or springs -- just pads on a pin, which seems odd to me.
    --Seems like these pads would work with this caliper:

    https://motowheels.com/i-23901450-br...rake-pads.htmlhttps://motowheels.com/i-23901450-brembo-rear-caliper-brake-pads.html[/URL]
    https://www.kurveygirl.com/shop/prod...roducts_id=720

    What I can't figure out:
    --What pin do I need to retain the pads in the caliper? Is it even available?
    --Were there springs in the caliper?
    --Keep running into conflicting information and part numbers, etc.

    Anyone have experience with this caliper or any suggestions?

    Thanks.

    Anyone fancy a research project?  (Brake pads and retainer pin)-img_1328-jpgAnyone fancy a research project?  (Brake pads and retainer pin)-img_1329-jpgAnyone fancy a research project?  (Brake pads and retainer pin)-img_1330-jpgAnyone fancy a research project?  (Brake pads and retainer pin)-img_1331-jpg

    0 Not allowed!
    /s/ Dustin
    LRRS #767
    '09 R6 / '11 848 Evo / '99 RS250

  2. #2
    High maintenance priss
    Join Date
    Jun 2004
    Location
    Central MA
    Age
    40
    Posts
    1,411

    Re: Anyone fancy a research project? (Brake pads and retainer pin)

    Hey Dustin - Looks like the part number for the pin (Brembo calls it a spindle) is 120A44170. No mention of a spring. Some of the other rear calipers do have a spring part number, so looks like yours may not have had one.

    Brembo Racing Catalog - See page 33.

    GL

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