The Shimano RD-TY300 Tourney Rear Derailleur is a reliable and efficient component designed for smooth gear shifting on your bike. Weighing just 315 grams, this rear derailleur is lightweight yet durable, making it ideal for both casual riders and enthusiasts. The RD-TY300 features a long cage design, allowing for a wide gear range compatibility, and is compatible with 6/7-speed drivetrains. Its SIS index shifting ensures precise and consistent gear changes, enhancing your overall riding experience. With a max rear sprocket of 34T and a total capacity of 43T, this derailleur offers versatility for various terrains. Upgrade your bike's performance with the Shimano RD-TY300 Tourney Rear Derailleur and enjoy a smoother and more efficient ride.