MTX solid discs 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 disc.MTX Discs provide amazing braking control for your motorcycle. All MTX discs are designed and manufactured with world-leading cutting edge technologies:Precision CNC machined and laser-cut technologyJapanese SUS 420 Stainless SteelReplacement for Original EquipmentOEM Design; lightening & drill hole patternsSpecifications:O.D: 220mmI.D: 118mmMinimum Thickness: 3.5mmDisc Position: Rear Fits: Kawasaki KLX400R 2003-2004 Suzuki DRZ400E 2000-2012 2014-2022 DRZ400S 2006-2016 RM125 1988-1998 RM250 1987-1998 RMX250 (NZ spec) 1992-1998