Marketing Color: Natural Material: Steel Sprocket Position: Rear Sprocket Size: 520 Sprocket Teeth: 42 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 HON NX250 1988-1990 fits HON XL200R 1983-1984 fits HON XL250R 1982-1984 fits HON XL250S 1978-1981 fits HON XL350R 1984-1985 fits HON XL500R 1982 fits HON XL500S 1979-1981 fits HON XL600R 1983-1987 fits HON XR200R 1984-2002 fits HON XR250 1979-1980 fits HON XR250R 1993-1994 fits HON XR250R 1984-1989 fits HON XR250R 1981-1982 fits HON XR350R 1983-1985 fits HON XR500 1979-1980 fits HON XR500R 1981-1984 fits HON XR600R 1985-1987 fits YAM WR250F 2015-2020 fits YAM WR250F 2011-2013 fits YAM WR250F 2008-2009 fits YAM WR250F 2001-2006 fits YAM WR250R 2008-2020 fits YAM WR250X 2008-2011