Increased chain retention The narrowwide teeth design improves chain retention, extends wear life, and reduces friction and noise, delivering smoother and quieter shifting. Material and weight Constructed from steel, this cassette cog offers durability while maintaining a lightweight profile for performance. Maximum ring durability and drop performance A larger wide tooth design provides maximum ring durability and enhances drop performance for MTB or road bikes. Easy installation Installing and removing this freewheel is quick and straightforward, enabling fast drivetrain upgrades. Compatibility and use cases Compatible with MTB and road bikes. Use scenarios: Trail riding on rugged terrain where reliable chain retention matters Urban commuting with mixed surfaces requiring smooth, quiet shifting Road rides with variable gearing where durability and performance are priorities