Author Topic: Are K1100 rear calipers interchangeable with K100?  (Read 3834 times)

Offline Mike Flores

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  • Posts: 75
Are K1100 rear calipers interchangeable with K100?
« on: December 08, 2016, 02:19:55 PM »
I need to replace the rear caliper on my '90 K100 (non ABS) after a mishap that resulted in a broken and non rebuildable caliper. I've been trawling eBay on the hunt for one, and have come across a few K1100 calipers for sale. They look like they might work, but I figured I'd ask here first.


Eventually I'd like to replace the trans/swingarm/final drive on my K100 with a paralever unit from a K1100, and my thought is that if I got the K1100 caliper now it'd save me a step later on down the road.


So will a K1100 (1995) rear caliper work as a direct bolt on replacement for the caliper on my (1990) K100? Also, is the ABS attachment bracket on the K1100 caliper removable? (it looks like it is, but double checking here).


Thank you.
  • Los Angeles, CA
  • 1987 K100

Offline Laitch

  • Faster than a speeding pullet
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  • Posts: 11299
Re: Are K1100 rear calipers interchangeable with K100?
« Reply #1 on: December 08, 2016, 06:32:28 PM »
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline rbm

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  • Posts: 2308
Re: Are K1100 rear calipers interchangeable with K100?
« Reply #2 on: December 08, 2016, 06:49:47 PM »
The K100 rear caliper (34511457469) was superseded by the K1100 rear caliper (34212332459) on Dec. 12, 2009 and is compatible with the following BMW motorcycles:

259 (R 1100 S, R 1100 RS)   (01/1992 — 06/2001)
K589 (K 1100 RS, K 1100 LT)   (06/1989 — 04/1999)
K589 (K 1200 RS, K 1200 LT)   (04/1996 — 04/2005)
K569 (K 75, K 75 c, K 75 s, K 75 RT)   (12/1984 — 11/1996)


Since the original part was superseded, the replacement is also compatible with the K100 from 1988.


This comes from a tiny bit of research on the parts calatolgue on the RealOEM website
  • Regards, Robert
Toronto, Ontario

1987 K75 - Build Blog @http://k75retro.blogspot.ca/

Offline Mike Flores

  • ^ Motobrick Curious
  • Posts: 75
Re: Are K1100 rear calipers interchangeable with K100?
« Reply #3 on: December 08, 2016, 10:00:22 PM »
RBM, Thanks for coming through with that info. I did a bit of digging around earlier today and realized the same thing by looking up part numbers on the microfiche at Bob's BMW.
  • Los Angeles, CA
  • 1987 K100

Offline Brad-Man

  • ^ Proficient Motobricker
  • Posts: 360
Re: Are K1100 rear calipers interchangeable with K100?
« Reply #4 on: December 09, 2016, 07:29:30 AM »
According to the parts riche at Max BMW that part # also fits the K100's to 12/96.
  • Marietta, GA
  • '85 K100
Toys don't make the Man - Man makes the Toys...
'74 RD350
'75 RD350 w/Modified 400 engine, Chambers & MZB iggy

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