Made From Aluminum, Intended Only for Stock Chain Sizes (Unless Noted)Resists CorrosionTeeth Are Hardened So Sprocket Will Hold Up to Many Miles Without Affecting StrengthCupped Down From the Tooth Ring to Body to Reduce as Much Weight as PossibleNumber of Teeth: 45Fits the Following Kawasaki Models:NINJA 250R 1988-2010NINJA 500R 1987-2009Fits the Following Suzuki Models:GSX-R1000 2009 (520 Conversion)Fits the Following Yamaha Models:FZ1 2001-2011 (520 Conversion)FZ6 2004-2009 (520 Conversion)YZF-R1 1998-2011 (520 Conversion)YZF-R6 2003-2011 (520 Conversion)YZF-R6S 2003-2009 (520 Conversion)Please Note: The Image Displayed Is Representative of the Item, but May Vary in Exact Style and Number of Teeth Depending on Your Specific Model.

Lightweight standard aluminum racing sprocket|100 percent CNC manufactured in the USA|Specially formulated alloy per Vortex specifications|Silver anodized to prevent corrosion|Unique tooth design increases sprocket longevity; Vortex patented sprocket design is unlike any other sprocket

PROP 65 WARNING: Cancer and/or reproductive harm - www.P65Warnings.ca.gov