Description
A worn or mismatched rear sprocket directly impacts your Yamaha’s acceleration, top-end performance, and drivetrain efficiency. The JT Sprockets 42-tooth rear sprocket delivers precise chain engagement and reliable power delivery lap after lap, whether you’re pushing for track times or commanding the street. Built from aviation-grade materials and finished to exact tolerances, this is the upgrade serious riders choose when stock simply won’t cut it.
- Material: Aviation-grade 7075-T6 aluminum
- Tooth Count: 42-tooth configuration
- MPN: JTR1912.42
- Finish: CNC-machined, hand-finished
- Design: Self-cleaning sprocket teeth
- Weight: Optimized lightweight construction
- Fitment: Yamaha-specific application
- Installation: Bolt-on replacement
- Durability: Extended service life
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