MOTOBRICK.COM
TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => Project Custom Motobricks => Topic started by: DEO on August 31, 2025, 02:45:17 PM
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Gentlemen,
I’m doing a complete transformation build to a scrambler on my 1990 K75C. I acquired GSXR forks with Brembo calipers, rotors and magnesium 3 spoke front wheel. Quite lucky with that purchase.
I am for now going to leave the rear wheel in place but want to upgrade the caliper to Brembo and would like to know if anyone can share what other model Beemer would have a rear Brembo caliper that would plug n play or well close to it.
Thanks
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My 1987 K75C has a rear drum brake which I thought was a defining feature of the model.
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Boy are you in for a treat.
Almost all. What do you have now, what do you want to install?
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My 1987 K75C has a rear drum brake which I thought was a defining feature of the model.
It is.
An 18" rear rim and a windshield or small handlebar-mounted cockpit fairing were also part of the package. Many of the cockpit fairings have experienced the Vincent van Gogh modification and subsequently wound up MIA. :laughing4-giggles:
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What do any of these replies have to do with what I posted? Jeez.
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Read all of the comments before you come back with a bratty comment.
Also, a simple Google search would have told you:
that k75's and k100's share a Brembo rear calliper.
Then if you have a drumbrake, assuming thats the upgrade you're talking about, you would need a conversion.
However thats not the only option.
So a simple answer to an earlier asked question would have gotten you further.
We're not your personal Google machine.
We're here for all. So even if someone drifts off, its not your personal belonging.
Hope that helps in the future
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Well I'm going to take the high road here in lieu of carving up a simp with words that will take him an afternoon to look up. But thanks for the helpful mature reply son.
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Good luck. Bye
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What do any of these replies have to do with what I posted? Jeez.
Sometimes, threads go off track, usually with humor instead of rancor, but John's statement is relevant as an attempt at verification. There have been inaccurate identifications of models here by their owners in the past. A K75C—the model you indicate is yours—has a drum brake. The Brick being used as your avatar seems to be a C. To add a Brembo caliper and disc of any type to it would likely require replacing the rear drive entirely with one cast with caliper mounts and assembled with a different cover than a C-model's drive as the most simple solution.
Any four-bolt monolever drive designed for a disc brake would do, and if you wanted to go special, then replacing the monolever drive with a paralever drive would be the thing. That would necessitate drilling your current transmission to receive the paralever's stabilizer strut if your current transmission has the casting tabs on the transmission that could be drilled to receive the strut. That's doubtful in a C model. You could always buy the transmission from a paralever model. It will bolt right up.