Rubber cushioned (RB) front sprocket.

• Computer-designed to achieve ultimate strength at minimum weight
• JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value
• Every sprocket meets or exceeds the highest possible quality standards set for the motorcycle industry
• Sprockets are heat-treated and bead-blasted to reduce material surface tension
• Front sprockets are made with C45 steel and SCM415 chromoly steel alloy; rear sprockets made with top-quality-grade C45 high-carbon steel
• Rubber cushion used by the major Japanese motorcycle manufacturers since early 1990’s to dampen the chain impact on the teeth of the front sprocket
• When installing sprockets which differ from OEM sizes, check for proper clearances before operating.