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: 282mmI.D: 132mmMinimum Thickness: 4.5mmDisc Position: Front Fits: Yamaha SRV250 1992-1997 XT600 1995-2003 XT600E 2004 XV1100 VIRAGO 1996-1998 XV250 VIRAGO 1995-2021