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Old 04-08-2014, 08:07 AM   #1
Jbone11 11 OP
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Is the single disc mod doable on 990 adv ABS?

Title says it all....wondering if the single disc mod for the 990 is doable with the ABS. Had look on ktm950.info, but didn't see this mod listed in the 950/990 mod section.

Would I fist need to remove/replace the ABS system with something else, like the brake system from the non-ABS 990 R?

Im still on the fence about it, but would like to know if it is at least possible with out ripping out the entire system.
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Old 04-08-2014, 08:19 AM   #2
Black Hills
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Why?
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Old 04-08-2014, 08:35 AM   #3
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you can, remove ABS pump and hoses, buy stock 9XX non ABS rear hose , 950 Super Enduro front master and have a single hose made up, ditch the right hand caliper.

you will need to leave most of the ABS electronics for the speedo to work and the ABS light will be always on on the dash.

not sure what stopping power this will give as you are not up-sizing the remaining front disc.....
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Old 04-08-2014, 09:01 AM   #4
Black Hills
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I can get the front brake to fade on my 300 when running on asphalt, can't imagine how quickly it would happen on a bike that weighs twice as much?
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Old 04-08-2014, 09:07 AM   #5
Jbone11 11 OP
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Quote:
Originally Posted by Black Hills View Post
Why?
Fair question. Just thinking about it at this point, mainly to save weight and simplify the bike for more off road use. Not sure dual discs are needed off road, and Im not 100% sold on the merits of ABS off road either....ON road yes... on both counts.

If things go well this season (both riding wise and wallet wise) I may invest in a dedicated off roader and keep the 990 for more exploring/touring oriented riding. But if the finances just aren't there I'll be working with what I have and thats the 990.

@ kinta...regarding the stopping power, this is one of the things I have been wondering as well, but there seems to be guys doing it and they're living to tell the tale.
Doing the front mod and going to a lipo battery is purported to save one 6kg on the front end alone. With the added removal of various ABS components, maybe more?

I dunno, like I said...more curious to know whats involved with the ABS version as it will be more complicated unless I replace it with the entire brake system from the R which is about the cost of decent used 450...or close to it
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Old 04-08-2014, 09:20 AM   #6
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i went to 1 disc on my 640 and it was no problem on the road and much much better in the dirt but i did not ride 2 up or heavily loaded to tour.

i think many go with a bigger disc when going to 1 disc on the 9XX.

as for the ABS removal the cost does not have to be great, remove the pump, leave the electronics and replace/reuse the hoses.
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Old 04-08-2014, 09:34 AM   #7
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Put money into having the suspension properly set up for you, then when the weight of that second disc is holding you back from going faster remove it.
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Old 04-08-2014, 09:55 AM   #8
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Originally Posted by catalina38 View Post
Put money into having the suspension properly set up for you, then when the weight of that second disc is holding you back from going faster remove it.
this^
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Old 04-08-2014, 10:01 AM   #9
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People assume too much. How do we know that he hasn't already done this and is looking at the option for the next step. Don't lecture him on suspension set-up or proper tire choice, just try to answer the question.
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Old 04-08-2014, 10:07 AM   #10
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Originally Posted by brents347 View Post
People assume too much. How do we know that he hasn't already done this and is looking at the option for the next step. Don't lecture him on suspension set-up or proper tire choice, just try to answer the question.


Yup,,, what brent said.

Having both an SE and ADV and using them both off road, I can say there are definitely times I've been wishing the ADV didn't have dual.
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Old 04-08-2014, 10:34 AM   #11
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Just converted my 950 a single 300mm disk set up last week fully expecting reduced braking performance. Surprisingly the combination of a full floating wave rotor, a high quality sintered set of pads , and a 950 SE master cylinder has produced a system with more bite and better feel then the OEM twin rotors and pads. This solved my low fender cross over brake line issue while also taking off 5lbs of unsprung weight off the front wheel. I have no doubt that this system will be more vulnerable to fading after extended heavy use but for me the benefits far outweight the cons. The 950 Super enduro came from the factory with this set up and has a comparable weight to my well farkled 950 adventure. Obviously the KTM engineers don't think that this set up is a huge problem or they would have given the SE dual disk as well.
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Old 04-08-2014, 10:57 AM   #12
Jbone11 11 OP
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Quote:
Originally Posted by catalina38 View Post
Put money into having the suspension properly set up for you, then when the weight of that second disc is holding you back from going faster remove it.
Already on the hit list...aiming for a mid summer swap out.
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Old 04-08-2014, 11:46 AM   #13
Black Hills
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Originally Posted by brents347 View Post
People assume too much. How do we know that he hasn't already done this and is looking at the option for the next step. Don't lecture him on suspension set-up or proper tire choice, just try to answer the question.

first reply answered his question. After that it is simply questions on what he is trying to achieve and the pro's and con's of this mod. you know, discussion for the sake of provoking something he may not have thought of lighten up
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Old 04-08-2014, 12:08 PM   #14
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I'm thinking of doing the same...but want to keep the ABS with an added switch for dirt. I'm curious to know if I make a single brake line from the ABS compressor to the left caliper...will the ABS still function normally. Seems to me like it should. Any thoughts?
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Old 04-08-2014, 05:36 PM   #15
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Originally Posted by motogearhead View Post
I'm thinking of doing the same...but want to keep the ABS with an added switch for dirt.
Me too. I already have the ABS cutoff switch for off road use and would like to get rid of the extra rotor. I was thinking of putting a 320 mm front rotor to compensate for the loss of the right side rotor. My concern was being able to fit the ABS sensor ring on the 320mm rotor.

Making a custom single brake line to run from the ABS to front brake would not be difficult and would probably cost ~$100.

Why? For the same reasons the OP listed.
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