Description
Sprocket selection directly impacts your acceleration curve, top speed, and engine load characteristics—making it one of the most cost-effective tuning decisions you can make. The JT SPROCKETS 42-tooth rear sprocket is engineered for riders who demand precision gearing without compromise, whether you’re optimizing for track performance or street responsiveness. This is a straightforward bolt-on upgrade that transforms how your Yamaha delivers power.
Technical Specifications:
- Manufacturer: JT SPROCKETS
- Tooth count: 42
- Application: Yamaha (JTR1876)
- MPN: JTR1876.42
- Installation: Bolt-on
- Material: High-grade steel
- Fitment: Vehicle-specific






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