Those are M4 calipers 100mmm x 30 mm offset ( so they are what we call standard 100 ) same spacing BUT different offset to the oem AT pots ( oem pots have 100mm x 22,5 offset)
So this oem are a mix betwenn the so called 100 mm (100 and 30 ) and the so called 108 mm (108 and 22,5)
Fitting calipers with bigger diameter pistons , give better brake power , i can use 330 mm rotors , way better choice of race oriented pads ( as the patter of the pads is common to LOT of brembo calipers)
BUT
You need :
special brake disc with a reduced offset
specific braided lines
a bigger master cylinder with new double switches ( one every on , one every off)
and a flash of the ABS module.
So yes worth it , if you know what are you doing