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Thread: Tokico brake upgrade

  1. #1
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    Default Tokico brake upgrade

    Changing my single piston standard brake caliper on my GS1000C to a twin piston from an SV650 , as far as I am aware the master cylinder on my model has a 16mm bore so expect i will need to go up in size , does anyone have any recommendations for a new master cylinder. Will the master cylinder from the twin disc GS1000 work ?
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  2. #2
    Nessism's Avatar
    Nessism is offline Forum LongTimer GSResource Superstar
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    Quote Originally Posted by Highway star View Post
    Changing my single piston standard brake caliper on my GS1000C to a twin piston from an SV650 , as far as I am aware the master cylinder on my model has a 16mm bore so expect i will need to go up in size , does anyone have any recommendations for a new master cylinder. Will the master cylinder from the twin disc GS1000 work ?
    Any master with a 5/8" or 16mm bore will work.

  3. #3
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    is that caliper a direct bolt on replacement or have you modified it to fit?
    1978 GS1085.

  4. #4
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    I am going to modify the bracket from the SV to fit

  5. #5
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    Quote Originally Posted by Highway star View Post
    I am going to modify the bracket from the SV to fit
    Post some pics of how you modify it, folks here are always interested in easy brake upgrades.
    1978 GS1085.

  6. #6
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    No problem will do

  7. #7
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    Quote Originally Posted by Agemax View Post
    Post some pics of how you modify it, folks here are always interested in easy brake upgrades.
    Agreed. If possible the year of the SV caliper and mounting bracket would also be helpful.
    2@ \'78 GS1000

  8. #8
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    Thanks my mistake thinking my present bore is 16mm, it being actually 14mm since discovered after doing some research.
    Part number for master cylinder piston on single disc model 59600-33810 14mm
    Part number for master cylinder piston on twin disc set up 59600-47810 16mm

  9. #9
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    cowboyup3371 is offline Forum LongTimer Past Site Supporter
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    Have you talked to Salty Monk on here or read his thread about the twinpot upgrade? He made brackets to fit the Kawasaki style of twinpots so maybe that will work for you.

    https://www.thegsresources.com/_foru...hlight=twinpot

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  10. #10
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    15160418450000836fd4a8895f30e by Dennis Harland, on Flickr

    My take on the salty monk twinpot upgrade. Small steel bracket between fork and caliper carrier. I use a Bandit 12 master cylinder.
    My bikes 79 GS1000 1085 checked and approved by stator the GSR mascot and 77 GS750 with 850 top end, GS850g, and my eldest sons 78 GS550, youngest sons GS125. Project bike 79 GS1000N

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