MTX floating discs are made from two segments of stainless steel which are riveted together to allow the outer section of stainless steel to expand under extreme temperatures. The outer section is manufactured from Japanese SUS 420 stainless steel then heat-treated to HRC 36+-2 while the centre of the disc is manufactured from steel or alloy. Fits: Honda CB1000R 2012-2014 CB1000R PREDATOR 2009-2011 CB1000RA ABS 2009-2013 CB1300 2003-2012 CB1300S 2005-2012 CBR600RR 2003-2022 CBR600RRA 2012-2017