SPROCKET, RR 42T

• Computer designed to achieve ultimate strength at minimum weight
• JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value
• Every sprocket meets or exceeds the highest possible quality standards
• Sprockets are heat-treated and beadblasted to reduce material surface tension
• Front sprockets are made with top-quality Japanese C45 high carbon steel and SCM415 chromoly steel alloy
• Steel rear sprockets are made with top-quality Japanese C45 high carbon steel
• Aluminum rear sprockets are made with high strength Austrian 7075 T-6 anodized aluminum
• JT aluminum sprockets are about 30% lighter than a comparable steel equivalent, which reduces un-sprung rotating weight and improves performance
• Lightweight front sprockets available for some applications

Fitment: JTR853-42 - BMW - G450X - 2008 - 2010
Fitment: JTR853-42 - Yamaha - DT400 - 1977 - 1978
Fitment: JTR853-42 - Yamaha - IT175 - 1980 - 1983
Fitment: JTR853-42 - Yamaha - IT200 - 1984 - 1986
Fitment: JTR853-42 - Yamaha - IT250 - 1977 - 1984
Fitment: JTR853-42 - Yamaha - IT400 - 1976 - 1979
Fitment: JTR853-42 - Yamaha - IT425 - 1980
Fitment: JTR853-42 - Yamaha - IT465 - 1981 - 1982
Fitment: JTR853-42 - Yamaha - IT490 - 1983 - 1984
Fitment: JTR853-42 - Yamaha - MX 250 - 1975
Fitment: JTR853-42 - Yamaha - TT-R250 - 1999 - 2006
Fitment: JTR853-42 - Yamaha - TT350 - 1985 - 1987
Fitment: JTR853-42 - Yamaha - TT500 - 1976 - 1981
Fitment: JTR853-42 - Yamaha - TT600 - 1983 - 1986
Fitment: JTR853-42 - Yamaha - WR250Z - 1991 - 1996
Fitment: JTR853-42 - Yamaha - WR400F - 1998
Fitment: JTR853-42 - Yamaha - WR500Z - 1992 - 1993
Fitment: JTR853-42 - Yamaha - XT500 - 1976 - 1981
Fitment: JTR853-42 - Yamaha - YFM350X Warrior - 1989 - 2004
Fitment: JTR853-42 - Yamaha - YFM660R Raptor - 2001 - 2005
Fitment: JTR853-42 - Yamaha - YFS200 Blaster - 1988 - 2006
Fitment: JTR853-42 - Yamaha - YFZ350 Banshee - 1989 - 2006
Fitment: JTR853-42 - Yamaha - YTZ250 Tri-Z - 1985 - 1986
Fitment: JTR853-42 - Yamaha - YZ100 - 1982 - 1983
Fitment: JTR853-42 - Yamaha - YZ125 - 1980 - 1998
Fitment: JTR853-42 - Yamaha - YZ250 - 1974 - 1998
Fitment: JTR853-42 - Yamaha - YZ250WR - 1989 - 1990
Fitment: JTR853-42 - Yamaha - YZ360 - 1974 - 1975
Fitment: JTR853-42 - Yamaha - YZ400 - 1976 - 1979
Fitment: JTR853-42 - Yamaha - YZ400F - 1998
Fitment: JTR853-42 - Yamaha - YZ465 - 1980 - 1981
Fitment: JTR853-42 - Yamaha - YZ490 - 1982 - 1990