The RD-TY300 Tourney 6/7-Speed Rear Derailleur is designed for riders seeking smooth and reliable shifting on entry-level and recreational bikes. Its long cage design accommodates 6 and 7-speed drivetrains, ensuring versatile compatibility for a wide range of setups. Featuring Shimano's SIS Index Shifting technology, this derailleur provides precise, consistent gear changes with minimal effort. The Double Servo mechanism keeps the guide pulley close to the sprockets for accurate shifts and reduced chain noise. Lightweight yet durable, the RD-TY300 Tourney Rear Derailleur makes upgrading your bike simple, enhancing performance and confidence on every ride.