MEROCA | Ultra-light Bicycle Freewheel for Speed System Upgrade

Lightweight Design The ultra-lightweight design ensures minimal weight added to your bike, enhancing your riding experience.

Mountain Bike Specialization Specifically tailored for mountain bikes, this derailleur excels in off-road conditions and steep terrains.

Hollow Structure The hollow structure of the cog wheel reduces weight without compromising on strength, providing optimal performance.

Upgrade Potential This derailleur serves as an excellent upgrade for your existing bike, enhancing its performance and longevity.

High-Speed Compatibility Designed for 9/10/11/12-speed mountain bikes, this derailleur offers seamless shifting across multiple gears.