The Brembos are definitely different then Cobra pads. Now if you are referring to the Brembos on the Cobra R then yes they are the same pads. I have the porterfields in my brembos and the part number for them is R4-s. I think Marcus is correct as far as stopping ability. I noticed that on the street the
brembo pads are much more responsive but once the porterfields are heated up (race track events) then they are much better. Very little dust on the porterfields. I think I'd like to give the hawk pads a try with my brembos to see if they are a balance between dust and braking ability I want for the street.