I have complete SLX M665 brakes on my bike. The hose fitting threads on my front brake lever got damaged recently, so I'm wondering if a new SLX M666 (2012, the new 1 finger levers) will work fine on the older M665 caliper.
Looking at the pictures, the M666 caliper uses a threaded pad pin (instead of a cotter pin), a new style pad (in that it has an option for pad heat sinks and that the threaded pin mounts through the middle of the pad instead of at one of the ends), and a banjo hose fitting (instead of a straight fitting). Otherwise I can't see any other a physical differences, though there could quite easily be some mechanical differences (i.e. changes in leverages) that would make mixing these old and new systems inadvisable or flat out impossible/ineffective.
Thoughts? I can probably still order an older M665 lever, but I like the new levers feel and layout a lot more.
My old caliper
New style caliper
The new lever I would like to use
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