JT SPROCKETS Counter Shaft Sprocket - 17-Tooth JTF339.17

A properly engineered counter shaft sprocket is fundamental to maximizing your bike's acceleration and overall drivetrain efficiency. The JT Sprockets 17-Tooth Counter Shaft Sprocket delivers computer-optimized tooth geometry that reduces wear while maintaining precise engagement with your chain, directly translating to smoother power delivery and extended component lifespan. Whether you're fine-tuning gearing for track performance or building a reliable street machine, this sprocket provides the durability and precision that separates quality builds from the rest.

• 17-tooth configuration
• Counter shaft application
• Computer-designed geometry
• Optimized strength-to-weight ratio
• JT Sprockets OEM quality
• MPN: JTF339.17
• Bolt-on installation
• Durable chain engagement