Renthal's Chain Wheels Are Precision CNC MacHined to Extremely Tight Tolerances to Give the Ultimate Combination of Strength and Light WeightFeatures Specially Developed Nickel-Chrome-Molybdenum Steel, Case Hardened Core Refined to Give the Ultimate Combination of Strength and HardnessUltralite DesignFits the Following Kawasaki Models:NINJA 650R 2006-2008KLX300R 2003-2007KX250 1999-2007Fits the Following Suzuki Models:GS500 1989-1993Fits the Following Yamaha Models:WR400F 1998-2001WR426F 2000-2002WR450F 2003-2009YZ250 1999-2010YZ400F 1998-1999YZ426F 2000-2002YZ450F 2003-2009Please Note: The Image Displayed Is Representative of Renthal Ultralite Front Sprockets, but May Show a Different Size And/or Number of Teeth. You Will Receive Front Sprocket Described.