JT Sprockets 530 Steel Rear Sprocket Yamaha Fj1100 / Fj1200 / Fzs600 / Fz1000 / Gts1000 / Yzf600 / Yzf1000 JT Sprockets crafts its steel sprockets with precision, utilizing the newest technology in computer design and metal cutting equipment. This meticulous process ensures both maximum durability and weight savings, offering a high-quality upgrade for your machine. Features: 530 pitch JT steel rear sprockets are made from C49 high carbon steel Heat-treated and bead blasted to reduce material surface tension