Description
A quality rear sprocket is critical to your power delivery and drivetrain longevity. JT’s 45-tooth sprocket combines computer-optimized design with premium C45 high-carbon steel to deliver the strength you need without unnecessary weight. Whether you’re pushing hard on the track or logging miles on the street, this heat-treated sprocket is engineered to meet the highest motorcycle industry standards.
- Fitment: Yamaha (vehicle-specific)
- Tooth Count: 45T
- Material: C45 high-carbon steel
- Heat-treated construction
- Bead blasted finish
- Computer-designed geometry
- Strength-to-weight optimized
- Installation: Bolt-on
- MPN: JTR857.45









