Upgrade your mini bike's performance with this premium 50-tooth rear sprocket designed specifically for Z50 mini bike hubs. Precision-engineered from durable black steel, this sprocket delivers reliable power transfer and optimal chain engagement with 420-pitch chains. The robust construction ensures long-lasting performance while the 50-tooth configuration offers an ideal balance of acceleration and top speed for mini bikes. The sprocket features precisely machined teeth that promote smooth chain operation and reduced wear. This replacement part integrates seamlessly with your motorcycle's drive system, making it perfect for maintenance or performance modifications. The black finish not only looks sharp but also provides additional protection against wear and corrosion. Compatible with standard mounting hardware, this sprocket is an essential component for maintaining your mini bike's drivetrain system. Installation is straightforward for those familiar with basic motorcycle maintenance, though professional installation is recommended for optimal performance. Sprocket Only. Hub,Wheel and hardware NOT Included.