Marketing Color: Natural JT Sprockets are made from the latest generation of computer design and control metal cutting equipment for maximum durability. Front sprockets are made from chromoly SCM420 steel alloy. All sprockets are heat-treated and hand-finished to meet or exceed the highest possible quality standards. This item fits the following vehicle applications: 1988 fits HON NX650 1982-1983 fits HON XL250R 1982 fits HON XL500R 1979-1981 fits HON XL500S 1983-1987 fits HON XL600R 1979-1980 fits HON XR500 1981-1984 fits HON XR500R 1985-1990 fits HON XR600R