• High precision teeth ensure close connection with bicycle hub for smooth rotation and easy maintenance
• The hollow design reduces weight and makes your riding easier
• Use it to directly replace your old or broken flywheel. Easy to install
• Made of quality steel material, with nickel-chromium treatment, high temperature resistance, corrosion resistance, no deformation, providing long-term durability
• Suitable for Shimano, for SRAM (not for SRAM xd), and most road bikes

Specification:

• Teeth ratio: 11-12-13-14-15-16-17-19-21-23-25T
• Speed: 11 speed
• Material: steel
• Weight: 247.7g