Twinpot Brake Upgrade on GS550E - GS750C - GS1000C

[Chuck78]

FYI I thought I recalled when mocking up twin pot calipers to custom fab a weld-on adapter bracket, that the 310mm rotors worked out perfectly IF the location of the relocated lower/rear mounting hole was altered slightly from where it needs to be for the dual disc 296mm location. I may recall the pad being right at the very edge of the rotor, but from what I recalled, a 320mm rotor would most definitely have close to 4mm excess rotor hanging off of the edge beyond the pads.

That has me very curious about this 316mm diameter rotor, although it seems to be only a non-USA model, as that NTV650 searched on eBay USA brings up solid rotors with a significantly larger center bore and bolt pattern. So unless one could cross reference the metalgear specs over to EBC, having one shipped from Australia is the best bet. It would be nice to find out if any US models used that particular rotor... So that we could source them used!

[EMFL]

Thanks for sharing

I did indeed get it done that weekend, just haven't gotten around to posting about it.

- CBR1100XX Blackbird rotor from ebay
- front left caliper from a 2000 Kawasaki Concours ZG1000A from ebay, practically new pads included
- SS lines from Slingshot Cycles (http://www.slingshotcycles.com/GS550_c_95.html)
- Speed bleeder from Slingshot (SB7100)
- Stock master cylinder

And while I was at it, I replaced the wheel bearings too. Bike stops much better, although the MC seems to be on the small side. Lever travel is fairly long, but easy effort.

I am in the process of buying a '83 GR650. Been thinking about rebuilding an older suzuki for sometime. As I start down this process will make sure to post my progress and share. Besides the carb rebuild, the brakes were going to be my second item to rebuild. Appreciate the info

[salty_monk]

There are a few guys running this setup now. You have to chamfer one corner of the pads to stop it wearing an edge where they don't touch the rotor but reports are good...

[salty_monk]

Bumping this for the guy looking for his 550. I do have brackets available.