Computer designed to achieve ultimate strength at minimum weight JT combines leading-edge technology with top materials to produce the ultimate quality sprocket Every sprocket meets or exceeds the highest possible quality standards Sprockets are heat-treated and beadblasted to reduce material surface tension Made with top-quality Japanese C45 high carbon steel NOTE: When installing sprockets that differ from OEM sizes, check for proper clearances before operating. Fitment 1991-1994 Honda CBR600F2 1995-1998 Honda CBR600F3 1999-2000 Honda CBR600F4 1992-1999 Honda CBR900RR 2015-2018 Yamaha YZF R1 2015-2018 Yamaha YZF R1M 1999-2002 Yamaha YZF R6

Made frontthe latest generation of computer design and control metal cutting equipment for maximum durability All sprockets are heat treated and hand finished to meet or exceed the highest quality standards JT rear sprockets are made from the finest C45 high carbon steel or7075 aluminum Fits Chain with a520 pitch