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: 250mmI.D: 100mmMinimum Thickness: 2.5mmDisc Position: Front Fits: Kawasaki KDX200 1992-1994 KLX250R 1993-2005 KLX300R 1997-2008 KLX650R 1996-2000 KX125 1989-2002 KX250 1989-2002 KX500 1989-2004