Marketing Color: Carbon Material: Steel Sprocket Position: Rear Sprocket Size: 420 Sprocket Teeth: 48 JT Sprockets are made from the latest generation of computer design and control metal cutting equipment for maximum durability. JT rear sprockets are made from the finest C45 high carbon steel. All sprockets are heat-treated and hand-finished to meet or exceed the highest possible quality standards. Induction hardened with black zinc finish available on certain sprockets. This item fits the following vehicle applications: 1988-1990 fits YAM DT50 1981-1983 fits YAM DT80 1974-1976 fits YAM GT80 1978-1980 fits YAM GT80 1977-1979 fits YAM GTMX 1978-1982 fits YAM LB50 Chappy 1980-1982 fits YAM MX80 1983 fits YAM RX50 2006-2009 fits YAM TTR50E 2012-2014 fits YAM TTR50E 1987-1992 fits YAM YSR50 1975-1977 fits YAM YZ80