Yeah, they fit. Definitely a lot cheaper than the BMW replacements and a bit more adjustable. They do fold up rather nicely so in the advent of a hard drop, you're a lot less likely to wreck the lever or perch.
And folded up
They also extend pretty far out (just pull, no tools required)
Clutch side extended
And flipped up
So basically for less than the price of one lever, I got a pair of nice "replacements" (relegating the originals to my backup parts bin) which should handle a drop a bit better than the originals.