Looking for an XT660R master cylinder as I've recently fitted 660R wheels front and back on my 660Z, my spokes on an "08 had rusted badly and it was cheaper buying second hand wheels than having mine rebuilt.
Still have master cylinder mounted and both calipers with the right hand side cable tied and lockwired with a worn pad between the good ones to maintain a decent lever ratio.
Would like to get rid of the right hand caliper and lose some more weight from the front end, always found the brake on my R more than adequate.

Pete.