Computer-designed to achieve ultimate strength at minimum weightJT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable valueEvery sprocket meets or exceeds the highest possible quality standards set for the motorcycle industrySprockets are heat-treated and bead-blasted to reduce material surface tensionFront sprockets made with C45 steel and SCM415 chromoly steel alloy; rear sprockets made with top-quality-grade C45 high-carbon steel NOTES:When installing sprockets which differ from OEM sizes, check for proper clearances before operating.