Are K1100 rear calipers interchangeable with K100?

[Mike Flores]

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.

[Laitch]

Here is a thread describing some of the research needed for a similar projects.

[rbm]

The K100 rear caliper (34511457469) was superseded by the K1100 rear caliper (34212332459) on Dec. 12, 2009 and is compatible with the following BMW motorcycles: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Since the original part was superseded, the replacement is also compatible with the K100 from 1988.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

[Mike Flores]

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.

[Brad-Man]

According to the parts riche at Max BMW that part # also fits the K100's to 12/96.