SOHC.co.uk Forums > CB750

Single disc to dual disc front brake

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Mag1:
Looking at making my 750k7 single front disc to dual braking, what works? Basically the same parts for single disc and fix to other side of forks, or is the brake calliper arm different from each side, looked at various conversions others have done and it looks the same set-up. Will a brake system from 550 work?

hairygit:
No! you will need 750 parts, the 550 has a smaller disc and while the 550 caliper looks the same, it isn't, the bolts that hold the 2 halves of the caliper together are spaced differently, and the actual piston is larger. The arm for a 550 brake wont fit either, it needs to all be 750 parts.

Johnwebley:
I did a twin disc on my 500,

  I got a GL1000 mastercylinder from David Silver.,
 also a double length banjo bolt to accept a second pipe on the tree,

 you just have to sort out the speedo drive ,

Mag1:
Thanks, OK 750 parts only, will investigate speedo drive. What mods are required to existing drive unit?. Have already refurbished and fixed cbr600 master cylinder to my single disc and was no problem and fits well. Will see if I can find more info on this. Thanks again

kevski:
I done a twin disc on my old K3 500, new master cylinder matching calipers and and mounts, i had to spin the speedo drive up on my lathe to reduce it's thickness so the second disc would go on, hopefully you won't need to do it on the 750.

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