• A wonderful accessory for most mountain bikes
• Made of quality steel material, high hardness, no deformation, providing long-term durability
• 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

Specification:

• Teeth ratio: 11-40T
• Speed: 11 speed
• Material: Steel
• Compatibility: for SHIMANO, for SRAM, etc