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 wave discs are engineered and designed to give your ride a great look without compromising your safety. The gentle wave design limits uneven wear that can cause pulsating resulting in premature replacement. Some motorcycles OEM discs are wave designs while we have others that are designed as an alternative upgrade to OEM solid discs.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: 260mmI.D: 127mmMinimum Thickness: 2.5mmDisc Position: Front Fits: KTM 125 SX 1998-2000 2003-2005 200 EXC 1998 2003-2006 200 SX 2003-2004 250 EXC 2003-2005 250 EXC RACING 2003-2006 250 SX 1998-1999 2003-2006 250 SXF 2005 300 EXC 1998 2003-2004 2006 300 XC 2006 360 SX 1996 400 DUKE 1994 400 EXC-RACING 2004-2005 400 SC SUPER COMPETITION 1995 450 SX 2006 450 XC 2004 525 SX 2004 2006 620 EGS 1996 620 SX 1994 1997-1998 625 SXC 2003 2005-2007