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1980 GS550 Front brake question

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    1980 GS550 Front brake question

    I just picked up a 1980 GS550 not sure of the last letter but In looks just like my old 80 GS1000G. Anyway my questions is....What years will the brake assembly interchange? (ie 78-82 ect ect?) In other words it is missing the entire front brake assembly, no caliper, hose or master. Im on ebay looking for one but want to make sure to get it right the first time. Any help will be greatly apreciated!!

    #2
    Originally posted by BigLay View Post
    I just picked up a 1980 GS550 not sure of the last letter but In looks just like my old 80 GS1000G. Anyway my questions is....What years will the brake assembly interchange? (ie 78-82 ect ect?) In other words it is missing the entire front brake assembly, no caliper, hose or master. Im on ebay looking for one but want to make sure to get it right the first time. Any help will be greatly apreciated!!
    You may want to look at PartShark.

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      #3
      Unfortunately these parts were only used on the '80 model 550 and 1000. So you will need to measure the distance between the mounting lug holes on your fork sliders and ask plenty of questions to Ebay sellers to make sure the parts will fit. Any 5/8 master cylinder will work for twin discs on your bike, but must be for 7/8" bars. Buy new brake lines, don't go "used", preferably stainless lines. Does your bike have single or twin discs?
      Last edited by Guest; 03-18-2011, 11:45 PM.

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        #4
        Thanks but Im not looking to find out where to get parts but more like what year front calipers will bold up on my forks. I dont know if they didnt make a one off fork for 1980 GS550. From that site i did see there are only a choise between 550E or 550L and I know for a fact its not an L.
        So what year front calipers interchange onto my 1980 GS550e?
        Last edited by Guest; 03-18-2011, 11:48 PM.

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          #5
          It has a single disk.
          Last edited by Guest; 03-18-2011, 11:51 PM.

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            #6
            Please don't expect to buy a bunch of 30 year old used brake system parts and then just slap them on your bike. Expect to perform a full tear down, clean out, and replace the old rubber lines which are sure to be deteriorated by now.
            Ed

            To measure is to know.

            Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

            Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

            Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

            KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

            Comment


              #7
              Yea I plan on rebuilding the master and caliper.. and new line..

              Comment


                #8
                Originally posted by Nessism View Post
                Please don't expect to buy a bunch of 30 year old used brake system parts and then just slap them on your bike. Expect to perform a full tear down, clean out, and replace the old rubber lines which are sure to be deteriorated by now.
                Ed he doesn't have any brake lines. I've suggested to him he buy or make stainles/teflon ones.

                Comment


                  #9
                  The caliper for your year ('80) is unique to that year as I said before.

                  Having said that the front forks that are on your bike are the same as the following models so there is no reason why the calipers off these models would not fit. Of course the other thing to check is whether your caliper is on the left or right fork leg, as the calipers are handed.

                  Part # = 51140-45032
                  Part Description = TUBE,FORK,LEFT,OUTER
                  Model Count = 8

                  GS550B 1977 549 GS550 STREET
                  GS550C 1978 549 GS550 STREET
                  GS550EC 1978 549 GS550E STREET
                  GS550ET 1980 549 GS550E STREET
                  GS550N 1979 549 GS550 STREET
                  GS750B 1977 748 GS750 STREET
                  GS750C 1978 748 GS750 STREET
                  GS750N 1979 748 GS750 STREET



                  .
                  Last edited by Guest; 03-19-2011, 12:14 AM.

                  Comment


                    #10
                    Originally posted by BigLay View Post
                    Yea I plan on rebuilding the master and caliper.. and new line..
                    Okay guys. I feel better now. Been hanging out here too long I guess...reading how some people throw away their old brakes and slam on ebay parts straight out of the box.
                    Ed

                    To measure is to know.

                    Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

                    Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

                    Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

                    KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

                    Comment


                      #11
                      Thanks Guys!! Don That list is exactly what I was looking for...

                      Im new here but not to motorcycles. You never know what kind of junk you get off ebay but if im rebuilding anyway I might as well start off with cheap parts off ebay...

                      Comment


                        #12
                        Originally posted by BigLay View Post
                        Thanks Guys!! Don That list is exactly what I was looking for...

                        Im new here but not to motorcycles. You never know what kind of junk you get off ebay but if im rebuilding anyway I might as well start off with cheap parts off ebay...
                        Is your disc/caliper on the left or right?

                        Comment


                          #13
                          Left side.

                          Comment


                            #14
                            Have you had a look in the FOR SALE Section of this site? Some members here might have some parts for sale or be parting out a bike.



                            BTW when buying a caliper be aware that the calipers for single disc and dual disc are different. The disks on the dual disk models are smaller than the single disk models. So when buying calipers on Ebay ask lots of questions in relation to the distance between bolt holes on caliper hangers.

                            Check out this site, it will help a lot:

                            Buy parts at a low price for your snowmobile here at Alpha Sports, we carry a LARGE variety of parts and accesories.


                            .

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                              #15
                              Thanks a ton.

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