Material: Steel Sprocket Position: Rear Sprocket Teeth: 36 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 H-D the following vehicle applications: fits YAM BW80 1990 fits YAM BW80 1986-1988 fits YAM DT100 1974-1983 fits YAM LB80 Chappy 1977 fits YAM LB80 II Chappy 1977-1978 fits YAM MX100 1979-1983 fits YAM PW80 1991-2006 fits YAM PW80 1983-1985 fits YAM RT100 1990-2000 fits YAM TTR110E 2011-2021 fits YAM TTR110E 2008-2009 fits YAM TTR50E 2012-2021 fits YAM TTR50E 2006-2009 fits YAM TTR90 2000-2003 fits YAM TTR90E 2003-2007