EMSea 1Pc Bicycle Flywheel Cover 12 Speed Locking with Spacer Compatible SHIMANO M7100 M8100 M9100 M6100 30.5x26x12mm Black

Compatible with SHIMANO M8100 10-45T, M8100 10-51T, M7100 10-45T, -M7100 10-51T, M6100, etc. The size is 30.5x26x12mm, 12-speed flywheel, ensuring tightness and durability after installation. Equipped with gaskets to provide better sealing and prevent excessive wear, the installation process is simple and convenient, no additional tools are required, suitable for DIY maintenance. Made of aluminum alloy material, it has durability and corrosion resistance, and can maintain excellent performance even in harsh riding environments. The locking cover ensures the effective connection between the flywheel and the rear wheel, improves the efficiency of the transmission system, enhances the riding experience, and reduces energy loss.