Description
A worn or undersized rear sprocket directly impacts your bike’s acceleration, top-end speed, and overall powerband delivery. The JT Sprockets 42-tooth rear sprocket is engineered to restore or customize your Kawasaki’s performance with the precision and durability expected in competitive racing and demanding street riding. Computer-optimized design eliminates unnecessary material while maintaining the strength required for consistent, reliable performance lap after lap.
JT Sprockets applies aerospace-grade manufacturing standards to every sprocket in this range. The C45 high-carbon steel construction is heat-treated and bead-blasted to eliminate surface tension and improve fatigue resistance, ensuring your investment delivers years of predictable power transfer without premature wear or tooth failure.
- Fitment: Kawasaki rear wheel
- Tooth count: 42T
- Material: C45 high-carbon steel
- Heat-treated construction
- Bead-blasted finish
- Computer-designed geometry
- Meets OEM+ standards
- Bolt-on installation
- MPN: JTR1490.42









