Front Rotor Swap

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  • Shin-Ken 1074
    Forum Sage
    Past Site Supporter
    Super Site Supporter
    • Feb 2008
    • 1906
    • Brisbane Queensland Australia
    #1

    Front Rotor Swap

    Hi to all, I am interested in swapping the front O.E.M. brake rotors and calipers on my 1982 GSX1100S Katana for a set of floating slotted brake rotors and the calipers from a 1985 GS1150. I don't have a photo to show - sorry. I have used the "Search" here and it does not list this rotor/caliper swap.

    Does anyone know for sure if this is a straight swap for the rotors and calipers?



    Thank you in advance for your help, cheers.
    Last edited by Shin-Ken 1074; 08-28-2013, 01:55 AM.
    Badgezz, we don need noh stinkin' badgezz!
    Shin-Ken 1074
    1982 GSX1100SXZ Wire Wheel Katana - BOM Nov 2011
    1981 GSX1135 Katana Build completed Mar 2024, Curb Weight, all fluids and 21 lt fuel = 206 kg.
    Tags: None
    • Guest
      #2
      Not positive but I don't believe it is a direct swap,
      Salty Monk has a brake up grade using 900 Fireblade rotors and Kawasaki Calipers though . Use the search function it should come right up.

        Comment

        • Shin-Ken 1074
          Forum Sage
          Past Site Supporter
          Super Site Supporter
          • Feb 2008
          • 1906
          • Brisbane Queensland Australia
          #3
          Yes, I have read Salty Monk's post on the brake up grade. The upgrade involves a Fireblade rotor swap and also changing the calipers. I am wanting to keep it an all Suzi swap so I am hoping it is a bolt off- bolt on deal? Could I be that lucky?

          Cheers.
          Last edited by Shin-Ken 1074; 08-28-2013, 01:57 AM.
          Badgezz, we don need noh stinkin' badgezz!
          Shin-Ken 1074
          1982 GSX1100SXZ Wire Wheel Katana - BOM Nov 2011
          1981 GSX1135 Katana Build completed Mar 2024, Curb Weight, all fluids and 21 lt fuel = 206 kg.

            Comment

            • GregT
              Forum Sage
              • Jul 2009
              • 3541
              • New Zealand
              #4
              Metalgear website is a good reference point - they give dimensions.

                Comment

                • Shin-Ken 1074
                  Forum Sage
                  Past Site Supporter
                  Super Site Supporter
                  • Feb 2008
                  • 1906
                  • Brisbane Queensland Australia
                  #5
                  Thanks for the tip Greg, I'll check out Metalgear.

                  Cheers.
                  Badgezz, we don need noh stinkin' badgezz!
                  Shin-Ken 1074
                  1982 GSX1100SXZ Wire Wheel Katana - BOM Nov 2011
                  1981 GSX1135 Katana Build completed Mar 2024, Curb Weight, all fluids and 21 lt fuel = 206 kg.

                    Comment

                    • postman_pat
                      #6
                      Yes, the rotors from the later bike are a straight swap onto the 1100 Katana.

                      Same internal diameter, bolt hole circumference and offset. The '84 GSX1100 is 275.5mm in diameter while the OEM Katana are 275mm. Not enough of a difference to be noticeable.

                        Comment

                        • Shin-Ken 1074
                          Forum Sage
                          Past Site Supporter
                          Super Site Supporter
                          • Feb 2008
                          • 1906
                          • Brisbane Queensland Australia
                          #7
                          Originally posted by postman_pat
                          Yes, the rotors from the later bike are a straight swap onto the 1100 Katana.

                          Same internal diameter, bolt hole circumference and offset. The '84 GSX1100 is 275.5mm in diameter while the OEM Katana are 275mm. Not enough of a difference to be noticeable.
                          Hi Postman Pat, thanks for confirming the rotors are a straight swap. I am still trying to find out if the oppossed piston calipers from the 84/85 GSX1100E (US - GS1150E) will bolt straight on to the Kat forks. With the rotors being the same working diameter I am thinking the calipers should have the same contact footprint. Now to find out if the bolt mounts are the same and if the caliper will clear the spokes.

                          Cheers.
                          Badgezz, we don need noh stinkin' badgezz!
                          Shin-Ken 1074
                          1982 GSX1100SXZ Wire Wheel Katana - BOM Nov 2011
                          1981 GSX1135 Katana Build completed Mar 2024, Curb Weight, all fluids and 21 lt fuel = 206 kg.

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