Z1 dual disc conversion with KZ900 wheel

  • hardrockminer
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16 May 2020 15:05 - 16 May 2020 15:07 #825878 by hardrockminer
Replied by hardrockminer on topic Z1 dual disc conversion with KZ900 wheel

Rick H. wrote: Thanks Scirocco for posting the info on the conversion kit. I have never seen that before. So unless I am wrong the disc rotor in the kit was the same rotor that would have been on the bike both being the wide rotors.
Rick H.


Correct. I have the kit on my blue Z1B. The rotors are the thick ones. One is a 9L and the other is a 1S date code. The PO had mounted them behind the forks but when I restored the bike I mounted them in front. As you can see, they were drilled.

I also have twin discs on my B4 but they are the thin ones. Scared the hell out of me when I checked their thickness one day and discovered they were thinner than the spec....then I realized they were thinner than the spec for the thick ones!


I have several restored bikes along with a 2006 Goldwing with a sidecar. My wife has a 2019 Suzuki DR 650 for on and off road.
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Last edit: 16 May 2020 15:07 by hardrockminer.
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  • Scirocco
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17 May 2020 09:49 #825919 by Scirocco
Replied by Scirocco on topic Z1 dual disc conversion with KZ900 wheel
Did any one ever thought about the brake pad shim orientation, (rollback/knockback effect)?

My 1975 Z 1 B 900 Project

www.kzrider.com/forum/11-projects/605133...ears-deep-sleep-mode
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17 May 2020 11:16 #825931 by hardrockminer
Replied by hardrockminer on topic Z1 dual disc conversion with KZ900 wheel
As far as I know the shim was only added to prevent brake squeak. I wonder if orientation makes a difference?
I have several restored bikes along with a 2006 Goldwing with a sidecar. My wife has a 2019 Suzuki DR 650 for on and off road.

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