Description
A properly sized rear sprocket is critical for maximizing your Kawasaki’s acceleration, top-end speed, and engine efficiency. This 42-tooth JT sprocket delivers the precision fit and durability needed for both street and track applications, engineered to handle sustained high-RPM performance without premature wear.
Built from aviation-grade 7075-T6 aluminum, this sprocket combines minimal rotating mass with exceptional strength—reducing parasitic losses while maintaining rigidity under load. The self-cleaning design and hand-finished construction ensure consistent engagement with your chain and longer overall drivetrain lifespan.
- Material: 7075-T6 aluminum alloy
- Tooth count: 42
- Fitment: Kawasaki-specific
- Construction: CNC-machined
- Finish: Hand-finished
- Design: Self-cleaning
- MPN: JTR478.42
- Installation: Bolt-on









