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Author Topic: 2020 SR/F front brake pulsing  (Read 564 times)

vinceherman

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2020 SR/F front brake pulsing
« on: June 29, 2022, 08:25:29 AM »

11.5k miles on my 2020 SR/F and I can feel the brakes pulse or surge with each revolution especially as you come to a stop.

I did search through the forum.  I will clean with denatured alcohol.  But in case I need to buy pads and rotors, I started looking at AF1Racing.
I could not find the rotor.
And I found many options for the pads.
Can anyone link me to the rotors and give advice on which pads to get?
I would rather have the right one than the cheapest one.

Edit:  I guess this is the rotor
https://www.af1racing.com/FRONT-320MM-CARRIER-ASSEMBLY-ZM25-08155
« Last Edit: June 29, 2022, 08:42:27 AM by vinceherman »
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Richard230

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Re: 2020 SR/F front brake pulsing
« Reply #1 on: June 29, 2022, 07:55:29 PM »

I have had good luck with EBC pads. Check the rotors to be sure that they are really warped by using a stiff wire attached to the forks and almost touching the brake disc. Rotate the wheel and observe by eye if there is any movement at the edge of the rotor that would indicated they are really warped.  They may be just covered with an uneven coating of pad material that alters the friction of the rotor at each revolution. A good cleaning of the rotor and the installation of new pads might be all that you need to fix your braking problem.
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Richard's motorcycle collection:  2018 16.6 kWh Zero S, 2009 BMW F650GS, 2020 KTM 390 Duke, 2002 Yamaha FZ1 (FZS1000N) and a 1978 Honda Kick 'N Go Senior.

DonTom

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Re: 2020 SR/F front brake pulsing
« Reply #2 on: June 29, 2022, 11:43:54 PM »

11.5k miles on my 2020 SR/F and I can feel the brakes pulse or surge with each revolution especially as you come to a stop.

Edit:  I guess this is the rotor
https://www.af1racing.com/FRONT-320MM-CARRIER-ASSEMBLY-ZM25-08155
I don't think that includes the rotor. Email them. Email address is shown here under "contact us".


-Don- Reno, NV
« Last Edit: June 29, 2022, 11:47:46 PM by DonTom »
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1971 BMW R75/5
1984 Yamaha Venture
2002 Suzuki DR200SE
2013 Triumph Trophy SE
2016 Kawasaki Versys 650 LT
2017 Blk/Gold HD Road Glide Ultra
2017 Org Zero DS ZF 6.5/(now is 7.2)
2017 Red Zero SR ZF13 w/ Pwr Tank
2020 Energica EVA SS9
2023 Energica Experia LE
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TheRan

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Re: 2020 SR/F front brake pulsing
« Reply #3 on: June 30, 2022, 02:31:23 AM »

That is the rotor, it matches up with the parts diagram
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DonTom

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Re: 2020 SR/F front brake pulsing
« Reply #4 on: July 01, 2022, 10:02:05 AM »

That is the rotor, it matches up with the parts diagram
OIC. But I wonder why they call it: "CARRIER ASSEMBLY"


-Don-  Reno, NV
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1971 BMW R75/5
1984 Yamaha Venture
2002 Suzuki DR200SE
2013 Triumph Trophy SE
2016 Kawasaki Versys 650 LT
2017 Blk/Gold HD Road Glide Ultra
2017 Org Zero DS ZF 6.5/(now is 7.2)
2017 Red Zero SR ZF13 w/ Pwr Tank
2020 Energica EVA SS9
2023 Energica Experia LE
2023 Zero DSR/X

2020_SRS_Commuter

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Re: 2020 SR/F front brake pulsing
« Reply #5 on: July 07, 2022, 07:00:42 AM »

There are threads here where a fellow , if I recall correctly he went by the user name nerveasy or some such, helped me and others with the same problem.

I had both front rotors warp within a few thousand miles. One was warped already when I left the dealer.
I replaced them both with new ones from AF1 and in a couple thousand miles, one of them had warped again and had cracks. I don't use the brakes much, much less abuse them, and I know how to ride a bike as I've been commuting on them daily for decades. I did nothing wrong. The brake disk material or fab process is utter rubbish.

Nerveasy's solution was to replace the Zero branded brakes with a substitute one made by EBC, and there are some different carrier bolts you need that come off an R1 or something like that.

At first, EBC sent me the wrong disks and it was because of my order that they corrected their parts catalog. You can find it in there now as the right number.

Since I did that, I had no more problems. Before you spend more money on these crap disks I suggest you look for that and consider it.

I've put about 20k miles on my EBC disks add pads and they are working as well as the day I put them on.

Good luck.

« Last Edit: July 07, 2022, 07:02:56 AM by 2020_SRS_Commuter »
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