Hmmm. I have never heard of that. I have the regular martas. I would call Magura. They have great customer service. I had to get a replacement master cylinder. They didn't even ask me to send the other one back. They just sent me a replacement. No questions asked. They're great brakes and I haven't really had any problems with them. Others seem to be. Maybe I was lucky.......but give Magura a call.delwilli said: