MTX solid rotors are constructed using one complete segment of Japanese SUS 420 stainless steel, then heat-treated to HRC 36+-2. Lightening and drill hole patterns are as per OEM designs to improve braking performance and reduce the temperature of the rotor. MTX Rotors provide amazing braking control foryour motorcycle. All MTX rotors are designed and manufactured with world-leading, cutting edge technologies: Precision CNC machined and laser-cut technology Japanese SUS 420 Stainless Steel Replacement for Original Equipment OEM Design; lightening & drill hole patterns Specifications: O.D: 260mm I.D: 126mm Minimum Thickness: 2.5mm Rotor Position: Rear Fits: Husqvarna FC350 2014-2015 FC450 2014-2015 FE250 2014-2015 FE350 2014-2015 FE450 2014-2015 FE501 2014 TC125 2014-2015 KTM 125 EXC ENDURO 1994-2015 400 EXC 2000-2011