Description

Enhance your biking experience with the BIYDOO Bicycle Rear Derailleur Tourney RD-TY21/RD-TZ31. This derailleur model, RD-TZ31-A-GS, is designed for 6/7 Speed SIS index Shifting drivetrains.

The hanger mount design of this rear derailleur ensures easy installation on compatible bikes. Before purchasing, make sure to verify if your bike requires a hanger mount or a direct mount.

Crafted from durable aluminum alloy, this rear derailleur offers stable performance and precise gear shifts for a safer and more enjoyable cycling experience. It is suitable for use on variable speed bikes, mountain bikes, road bikes, folding bikes, city bikes, tricycles, and more.

Your satisfaction is our top priority, and we are dedicated to providing exceptional customer service. If you have any inquiries, please don’t hesitate to reach out to us, and we will promptly address your concerns.