Pre 82 front calipers

[coops]

I fuckin know, talk about keyboard daihorrea.
Could you put up pics of your bike?
Show me yours & I'll show you mine.

Yep....... but I gotta take pick first. Busy. il get round to it sometime.
Tell me.... Where is buttfuck nowhere?

[sidecar bob]

Yep....... but I gotta take pick first. Busy. il get round to it sometime.
Tell me.... Where is buttfuck nowhere?

Part way between Sanson & Kerikeri.

[J.A.W.]

Looking for some sort of upgrade on my pre 82 gs750 race bike. currently has gpz 1100 b1 front end with 17" Suzuki bandit wheels.
Twin disc. but the gpz calipers are single pot. Useless.
Would be better with twin opposing pots or lockheeds or brembos or something.
Can use a lathe and mill so attaching shouldn't be a problem provided there is room between the wheel and discs. (for inner pot)
Havnt had a lot of time to research this but basically all jap bikes of this era had crap, absolutetly crap brakes...other options expensive?
I haven't actually found any options. Must be manufactured pre 82 or look the same.
Any help would be appreciated.
Steve.

Oddly enough, I recently checked out a mate's newly bought late `70s KZ 1000 LTD US 'custom' chopper-style Kawasaki..
& it features a large rear disc gripped by a big twin opposed piston caliper, that very much resembles the type Kawasaki
put on their race bikes of that era..

Of course the the front brakes were the crappy single piston sliding caliper type, funny that the Nippon makers did that kind of thing,
Yamaha was doing it too, right up to the mid `80s..

[FROSTY:Me]

I dunno if this helps but in its day The Yamaha XJ900 had about the best brakes out there. Ventilated disks and big twin opposed piston calipers.
I know in NZ they came out in 83 but I wonder if the brakes were used on something else before the 900

[RDjase]

Jeez, you lot bang on.
What about bushing these up? If your a tight prick like me. Apparently quality is good. Think I might.
https://www.mikesxs.net/products-19.html#products

I have those in my RD350LC race bike, with 32mm forks, the XS650 has 35mm forks with thick walled fork tubes. I did have the dimensions written on the shed wall from when I fitted them, moved house since then and didn't take the piece of wall with me.
If I get time I will slip then out and have a measure and post some pics