JTR859 Rear Drive Motorcycle Sprocket 42 Teeth (JTR 859.42)

Made by JT Sprockets, world leading aftermarket sprocket manufacturer for over 30 years. JT Sprockets offer an unbeatable combination of quality, durability, and price. JT Drive sprockets are exclusively made from the finest Japanese ultra-durable high carbon C49 Steel or SCM415 Chromoly Steel Alloy.


  • Fully heat treated for higher wear resistance
  • Meet or exceed Japanese OEM standards
  • Optimum design for light weight and strength
  • Perfectly finished in zinc or black enamel coating

Compatible Bikes:

Manufacturer Model Year
Yamaha FJ1100 L,N,CN,CL - USA 1984-1985
Yamaha FZR750 RT Genesis 1988-1989

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