Pads length – 190 mm. To understand calipers size you can compare it for example with most 6 pot calipers on the market, which are smaller and have only maximum 152mm long pads.
Caliper weight is only 3.3 kg after modification done. Bracket – 350 gr. (a typical aluminum bracket weighs 600-700 gr., and steel one is even more!)
Caliper uses very common brake pads, so any pad height can be chosen for the best setup. You can take smaller height pads of 47mm or 57mm for 2 piece lightweight rotors like used in the kits; 65mm pads for excellent fit on OEM m3 floating rotors can also be used; 76mm pads for widest rotors like 380mm rotors from f8x series can be taken too.
Pads can be changed without removing a caliper — only a center pin needs to be removed.
Calipers have dust boots, so they work excellently for an everyday use.
Overall pistons area very similar to most of OEM setups, so there are no problems when fitting them.