Brain fart Jay?
16v RS sensor is fitted to the caliper unlike the later bikes that use the old rear shock mount:
The K1100 I'm tinkering with at present has been stripped of the ABS so I've removed the sensor and bracket:
The torx screws came out easily but the sensor was stuck solid. I had to destroy it to get it out (shame as it might have been handy as a spare for the K1).