• The flywheel is made of high-quality materials, has good wear resistance and fatigue resistance, and can maintain stable transmission performance during high-intensity riding
• The flywheel is made of lightweight materials, making the entire bicycle lighter and more comfortable
• The flywheel is suitable for a variety of terrains and riding scenarios, whether it's urban commuting or outdoor adventures

Specification:

• Speed: 12 speed
• Material: steel+aluminum
• Teeth ratio: 11-50T
• Compatible with: for Shimano/Sram