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Thread: Brake line diameter? K1200rs

  1. #1
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    Brake line diameter? K1200rs

    Anyone happen to know what diameter the brake line is for the ABS delete. I'm stopping at the auto store tomorrow morning on the way to the shop and was going to get a couple feet of brake line.
    It's for a 04 K1200rs. As I understand it the rear line can be twisted into position, but the front needs a "U" shaped piece bent and spliced in.
    Thanks for the help!

  2. #2
    Fortis Fortuna Adiuvat Omega Man's Avatar
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    Welcome to the forum!
    I can't help you with the size but can recommend the "new" copper nickel brake line. pretty much a pleasure to work with due to the ease of bending without crushing/kinking. I'm pretty sure you will need to do a "double flair" on the lines......so you will need the tool.
    You might find what you need on the Speigler brake line sight to see you some messin' 'round.
    Gary
    "You can do good or you can do well. Sooner or later they make you choose." MI5
    Mod Squad
    2009 F800GS 1994 TW200

  3. #3
    Registered User kioolt's Avatar
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    I used 3/16" (4.75mm) on my 04 R1150RT. I believe it is bubble flared.
    2004 R1150RT 186,800 miles , 1991 K100LT 128,700 miles, 1982 R100RT 106,900 miles
    Total 422,400 BMW miles
    AMA,BMWRA,BMWMOA
    The cheapest thing on a BMW is the nut that connects the handlebars to the seat.

  4. #4
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    Thanks , 3/16 bubble sounds right. I'll buy some copper line and give it a go.

  5. #5
    If you want custom lines for the delete (and you do), here is what you need.13361987-B964-4502-8384-10D8B87F486A.jpeg

    On my 03 K12GT (Speed bleeders were wrong)

  6. #6
    Fortis Fortuna Adiuvat Omega Man's Avatar
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    ^^^^^^Nice
    OM
    "You can do good or you can do well. Sooner or later they make you choose." MI5
    Mod Squad
    2009 F800GS 1994 TW200

  7. #7
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    So I made it up to the shop yesterday. I got as far as stripping off the fairing ,tank, and related bits. Tomorrow I'll remove the abs unit and hook up the lines.
    The goal here is to put the bike back in service asap so as to find all the gremlins before the riding year ends. The bike was purchased as a winter project and I'm sure there are more suprises to come. The abs was a known issue as was an indication of a minor oil leak in the clutch compartmant. I will address the leak over the winter as well as new lines. Runs well once warmed up, so I'm going to look over the ignition , fuel filter, and possibly valve settings this week.

    Other than that I should be good to go. Thanks for all for the suggestions.

  8. #8
    The control module on the top of the iabs unit has to be retained. Without it, you wonít have a brake lights or a speedo. Brake lights can be overcome with a couple of relays, but the speedo is a problem. I searched and never found anyone who had devised a workaround. I did find that Jegs had a gps speedo sender for $100 that might have worked, but fortunately, I was able to get my module repaired, and didnít have to try the gps solution. I fabbed up a cover and mount and tucked it into the giant void where the pumps used to live. 6 weeks & 1500+ miles later and I donít miss the abs. I really donít miss the noisy/whiney pumps!

    The video below contains a couple other little tips. Hope it helps!

    https://m.youtube.com/watch?v=6pZpPnKeQzk

  9. #9
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    Almost back together , I just have to seal and install the electronic box. I made a "jumper " line for the front brakes, and adapted the rears to fit. They are bubble flare lines for sure.
    Front brake lever is rock hard, the rear is so so. I'll bleed it again just to be sure.
    Thanks for your suggestions.

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