Description
A worn or mismatched rear sprocket directly impacts your KTM’s acceleration, top-end speed, and overall drivetrain efficiency. This JT 42-tooth sprocket delivers the precision engineering and durability required for consistent performance, whether you’re pushing hard on the track or logging trail miles. Built with premium C45 high-carbon steel and engineered for minimal weight without sacrificing strength, it’s the intelligent choice for riders who demand reliability without compromise.
- 42-tooth rear sprocket
- KTM fitment
- C45 high-carbon steel
- Heat-treated construction
- Bead-blasted finish
- Reduced surface tension
- Computer-designed strength
- Minimum weight profile
- Industry-leading durability
- Bolt-on installation
- MPN: JTR890.42ZBK






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