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Dual Disc Necessities?

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Old Aug 10, 2022 | 10:34 PM
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Default Dual Disc Necessities?

Just got my new 17' Lowrider S front end for my 2011 Street Bob as I'm planning on getting dual disc's soon. My question is what is all NEEDED? I have the front end, I know I'll need new upper and lower brake lines.

Will I need a new master cylinder as well? If so what brand do you suggest? Anything else that you can think of that I might be overlooking feel free to lmk.
 
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Old Aug 11, 2022 | 11:30 AM
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For sure you need a new master cylinder. Use the one for the Lowrider/Fatbob. Other than that just the obvious stuff.
 
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Old Aug 11, 2022 | 04:13 PM
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It really depends on how deep you want to go. In my case nothing Harley is left for the brakes. I used a Brembo 19RCS master cylinder, had Spiegler make a set of brake lines to my specs, radial calipers off an R6, speed merchant mounts for them, and Brake tech floating rotors. I did have to make a few spacers to get it all lined up but you can get by with stacking washers just doesn't look as good. It's more braking then I will need but it's there. Entire systems was a little spendy but I feel it was worth it. I really like the brembo master. One thing to consider but I think you may be safe (others here know for sure) is if you have the canbus system like my 2015 you will need to buy a brake light switch for the master. Harley went opposite the rest of the world so the supplied one from brembo works backwards.

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Old Aug 11, 2022 | 04:26 PM
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Do you need dual disk . No we road a long time on drum front brakes. Then we road a while on single front disk. then all the sudden we can't live with out dual.
 
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Old Aug 11, 2022 | 04:35 PM
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Originally Posted by smitty901
Do you need dual disk . No we road a long time on drum front brakes. Then we road a while on single front disk. then all the sudden we can't live with out dual.
Oh I know very well that dual disc's don't improve braking significantly enough to notice a massive difference. That's why I, like most people I feel, am doing it for the look rather than the performance improvement. I want dual brakes because it looks cool not because I'm in search of more braking power.
 
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Old Aug 12, 2022 | 01:56 AM
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Originally Posted by Pin_Head99
Oh I know very well that dual disc's don't improve braking significantly enough to notice a massive difference. That's why I, like most people I feel, am doing it for the look rather than the performance improvement. I want dual brakes because it looks cool not because I'm in search of more braking power.
Coming from a Hypersports bike background I thought I absolutely had to have dual front discs on my Sportster so I held out for a Roadster . The brakes were good but not spectacular . Moving on , I convinced myself that I absolutely had to have an FXDX for the same reason . However , having followed the previous owner of my FXDC and his passenger around some English country roads at high speeds , I became convinced that one brake was quite enough . So I bought the bike and it proved to be so . I agree though that twin discs do look a lot better on a Harley than one . It's like a statement that the rider rides the bike like they mean it rather than chugs along at sixty like a lot of us actually do .
 
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Old Aug 16, 2022 | 09:39 AM
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Originally Posted by union53
It really depends on how deep you want to go. In my case nothing Harley is left for the brakes. I used a Brembo 19RCS master cylinder, had Spiegler make a set of brake lines to my specs, radial calipers off an R6, speed merchant mounts for them, and Brake tech floating rotors. I did have to make a few spacers to get it all lined up but you can get by with stacking washers just doesn't look as good. It's more braking then I will need but it's there. Entire systems was a little spendy but I feel it was worth it. I really like the brembo master. One thing to consider but I think you may be safe (others here know for sure) is if you have the canbus system like my 2015 you will need to buy a brake light switch for the master. Harley went opposite the rest of the world so the supplied one from brembo works backwards.



Are your fork seals exposed in that picture???
 
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Old Aug 16, 2022 | 09:44 AM
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Originally Posted by Pin_Head99
Just got my new 17' Lowrider S front end for my 2011 Street Bob as I'm planning on getting dual disc's soon. My question is what is all NEEDED? I have the front end, I know I'll need new upper and lower brake lines.

Will I need a new master cylinder as well? If so what brand do you suggest? Anything else that you can think of that I might be overlooking feel free to lmk.
There are tons of threads on this subject, this one is mine Dual Front Disc - Harley Davidson Forums (hdforums.com)



 
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Old Aug 16, 2022 | 04:36 PM
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Originally Posted by snake_eyes
There are tons of threads on this subject, this one is mine Dual Front Disc - Harley Davidson Forums (hdforums.com)


I like the Galfer brake tee. Im gonna be going pretty in depth with it. Performance machine calipers, after market floating rotors, braided lines upper and lower. Just dreading the price of all of it lol.
 
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Old Aug 21, 2022 | 10:48 AM
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Originally Posted by snake_eyes
Are your fork seals exposed in that picture???
It's not the seals it's just the wiper but yes they are exposed. The chrome covers only make it harder for any moisture to escape and could cause rust issues which is what I had when I swapped out the lowers to go dual disc.
 
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