Corona

Manufactured from the best materials with a special self-cleaning design, and hand-finished to perfection. Computer designed to achieve ultimate strength at minimum weight. JT combines leading-edge technology with the top materials to produce the ultimate quality sprocket range with unbearable value. Every sprocket meets or exceeds the highest possible quality standards. Sprockets are heat-treated and beadblasted to reduce material surface tension. Steel rear sprockets are made with top-quality Japanese C45 high carbon steel.