





6/7 Speed Mountain Bike Rear Derailleur
Category: Parts

Model: Bicycle Rear Derailleur RD-TY21B (6 Speed and 7 Speed SIS Index Variable Speed Drives)
- Suitable for 6 Speed and 7 Speed SIS Index Variable Speed Drives
- The RD-TY21B rear derailleur is specifically designed to work seamlessly with both 6 speed and 7 speed SIS index systems, ensuring compatibility and optimal performance in variable speed cycling.
Hanger Installation: - Before Purchasing: Ensure that your bicycle's rear derailleur is either directly installed or hook-mounted (hanger mount). Our derailleur is compatible with both types, making it versatile and adaptable to your bike's design.
High-Quality Material: - Durable Aluminum Alloy: Crafted from durable aluminum alloy, the RD-TY21B is designed to endure the rigors of regular use. It is not only sturdy but also resistant to deformation, ensuring a safe and stable ride.
Wide Application: - Versatile Uses: Suitable for a range of bicycles, including variable speed bikes, mountain bikes, road bikes, racing bikes, city bikes, and folding bikes. Whether you're commuting, racing, or enjoying a leisurely ride, this derailleur is the perfect companion.
Professional Customer Service: - Support and Assistance: Need help with your purchase or any questions about our products and services? Our team stands ready to assist you. Contact us for professional and reliable support.











































