Optimize your bike's performance with our Bike Hub Spacer Washer Set—the ultimate solution for precise cassette alignment! Designed for MTB, road bikes, and 7 - 11S cassettes, this aluminum spacer kit includes various sizes (1/1.5/2/1.85/2.18/2.35mm) to fit your bike's needs. Whether you're building a new bike, repairing an old one, or customizing your drivetrain, these spacers ensure smooth shifting, reduced vibration, and enhanced performance.Crafted from durable, lightweight aluminum, these MTB Flywheel Cassette Spacers are built to last. The precision - engineered design reduces chain slack, prevents shifting issues, and minimizes wear on your drivetrain. Easy to install—simply choose the right size, slide it onto the axle, and secure your cassette. No special tools required, making it perfect for home mechanics and professional workshops alike.For cyclists who demand the best, these spacers deliver. They improve drivetrain efficiency, reduce noise, and extend the life of your components. Whether you're racing, commuting, or cruising, these Road Bike Cassette Spacer Washers ensure a smoother, quieter ride. Compatible with most 7 - 11S cassettes, they're a versatile addition to any bike - maintenance toolkit.Invest in your bike's performance with this comprehensive spacer set. Multiple sizes mean you're ready for any adjustment, and durable aluminum construction ensures long - term reliability. Say goodbye to shifting problems and hello to a better ride—order your Bicycle Flywheel Spacer Kit today and experience the difference!