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What are the correct REAR brake pads for a 79F?

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  • What are the correct REAR brake pads for a 79F?

    Ok,

    So most of the online locations show the rear pads being the same as the front pads for the 79F standard motorcycle. I just got a set in, and they are not the same. After double checking the packaging, it looks like he the pads I have are not the same part number (23W-W0045-01-00), but it looks like the parts I need are (4K0-W0045-01-00), at least according to cycle parts nation.

    Does anyone know exactly what the correct part is for the rear brakes on this bike? And where is a good place to get them quickly???

    Thanks again!
    -- Clint
    1979 XS1100F - bought for $500 in 1989

  • #2
    I spend too much time on Fleabay

    http://cgi.ebay.com/ebaymotors/Brake...item3ef37f5003


    http://cgi.ebay.com/ebaymotors/NHC-K...item45ef34bb62

    http://cgi.ebay.com/ebaymotors/BRAKE...item518e392deb


    http://cgi.ebay.com/ebaymotors/Yamah...item53df66e580


    http://cgi.ebay.com/ebaymotors/Yamah...item53df6719c7
    2 - 80 LGs bought one new
    81 LH
    02 FXSTB Nighttrain
    22 FLTRK Road Glide Limited
    Jim

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    • #3
      According to the Yamaha fiche, these are the part #'s

      Rear 1J3-W0046-00-00

      Front 1J3-W0045-00-00

      There is a warning in the shop manual about using the right pad on the right wheel. Apparently the rear pads are supposed to be sintered metal. The warning reads:

      "Front and rear pads are exactly alike in shape but not material....it must be remembered that the use of front pads as rear ones will be dangerous especially when the brake is applied in wet weather".

      Methinks the front pad material is 'stickier' and if used on the rear will promote premature lock-up in the wet. Just my theory. That said, I'm SURE I've mixed them up at one time or another over the years and I'm still here (knocking on my wooden head).

      Comment


      • #4
        I thought (smoke rolling out my ears) that the difference w/ the original pads were related to the fronts haveing a better gripping action than the rears. Hence the rear wheel lock up. And the new ones today are all the same. Wouldn't be the first time I was wrong, but if I keep trying I'll get it wrong a few more times.
        79 F full cruiser, stainless brake lines, spade fuses, Accel coils, modded air box w/larger velocity stacks, 750 FD.
        79 SF parts bike.

        Comment


        • #5
          According to PNM the front and rear of the Standards and the rear of the Special/MNS models are all the same set. Same for BB.
          Life is what happens while your planning everything else!

          When your work speaks for itself, don't interrupt.

          81 XS1100 Special - Humpty Dumpty
          80 XS1100 Special - Project Resurrection


          Previously owned
          93 GSX600F
          80 XS1100 Special - Ruby
          81 XS1100 Special
          81 CB750 C
          80 CB750 C
          78 XS750

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          • #6
            Originally posted by DGXSER View Post
            According to PNM the front and rear of the Standards and the rear of the Special/MNS models are all the same set. Same for BB.
            That's what I thought as well.

            What are your bets that aftermarket pads are all identical and only the factory originals paid any attention to the difference in materials?
            Ich habe dich nicht gefragt.

            Comment


            • #7
              i have to do mine as well.... my rear is about gone. ever since i was told to go easy on the front and use the rear around the twisties... it does seem to help. maybe that's why i wore out the sides of the front tire way before the middle!!!
              " She'll make point five past lightspeed. She may not look like much, but she's got it where it counts, kid. I've made a lot of special modifications myself. "

              79 xs11 standard
              xs pods, Kerker 4-1, zrx1200r carbs mikesxs coils 35k voltz of power!!!
              8mm msd wires
              tkat fork brace...
              Fox shocks...
              mikes650 front fender
              led's gallore...
              renthal bars
              gold valve emulators
              vmax tensioner
              Rifle fairing

              Comment


              • #8
                I just picked up a set of pads from the local Yamaha dealer. We where both surprised that they had them in stock. They were NOT factory pads, but were EBC pads. Given that I just started to touch the backing plate on the outside pad, I guess these will have to do!

                At least they are the correct shape!
                -- Clint
                1979 XS1100F - bought for $500 in 1989

                Comment


                • #9
                  If you don't mind sharing

                  How much did they charge you for them?
                  2 - 80 LGs bought one new
                  81 LH
                  02 FXSTB Nighttrain
                  22 FLTRK Road Glide Limited
                  Jim

                  Comment


                  • #10
                    Originally posted by cajun31 View Post
                    How much did they charge you for them?
                    $32 + tax. Low enough I was willing to pick them up on the spot.
                    -- Clint
                    1979 XS1100F - bought for $500 in 1989

                    Comment


                    • #11
                      Don't mean to resurrect the dead, but....

                      Anybody ever seen or used these brake pads?

                      It was late and I knew I'd need to change my pads sooner or later (rear brake starting to squeak just a little) and I jumped and bought 3 (they list the exact same brake elsewhere for the rear as well) which I'll be putting on soon. Just wanted to make sure I didn't get the world's cruddiest brake pads. I mean, they shipped from England, they can't be that bad can they?
                      1978 Yamaha XS 1100E "Monster" 2010-2012
                      2004 RCM-50GL 2008-2010, Don't ask, don't tell (don't really know)

                      Comment


                      • #12
                        Hey Drake,

                        I had heard of www.Pyramid-Parts.com EURO company, and just went to their web site, but they don't offer brake pads ANYMORE??? So...looks like it's possibly NOS type stock you're getting??

                        I, too, read about the rear pads being different material than the fronts....YEARS ago, but I think they got away from that, and make them all out of the same material now.

                        You don't want SINTERED pads on our machines, they chew up the rotors to quickly, and are really more for racing applications.

                        You should be good with those.
                        T.C.
                        T. C. Gresham
                        81SH "Godzilla" . . .1179cc super-rat.
                        79SF "The Teacher" . . .basket case!
                        History shows again and again,
                        How nature points out the folly of men!

                        Comment


                        • #13
                          MikesXS also has front and rear pads for Standards, P/N 29-3522 Kevlar carbon compound for $15 a set. I use them and they work fine. They also fit the rear on Specials, 79-80.
                          2H7 (79) owned since '89
                          3H3 owned since '06

                          "If it ain't broke, modify it"

                          Comment


                          • #14
                            Originally posted by TopCatGr58 View Post
                            You don't want SINTERED pads on our machines, they chew up the rotors to quickly, and are really more for racing applications.

                            You should be good with those.
                            T.C.
                            Hmm...the description says they are
                            Manufactured from sintered copper alloy for longer life.
                            Should I hold on to these to use in a pinch and order some others from MikesXS? Or will one set not kill my rotors too bad and just get different ones next time?
                            1978 Yamaha XS 1100E "Monster" 2010-2012
                            2004 RCM-50GL 2008-2010, Don't ask, don't tell (don't really know)

                            Comment


                            • #15
                              Originally posted by bikerphil View Post
                              MikesXS also has front and rear pads for Standards, P/N 29-3522 Kevlar carbon compound for $15 a set. I use them and they work fine. They also fit the rear on Specials, 79-80.
                              These are what I have in front of me right now, ready to go on tomorrow after I go buy the correct sockets to remove the wheels.
                              Mike C
                              Lake Orion, Michigan
                              '78 XS1100E

                              Here I am! Where are you?

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