Shimano Tourney RD-TY300D rear derailleur A new version of the well-known and popular RD-TX35D derailleur. The RD-TY300D is a dropout-mounted derailleur. It's part of a group designed for 5-, 6-, 7-, and 8-speed drivetrains. It is one of the cheapest derailleurs on the market, which is why it is recommended for use by beginners and less demanding cyclists. Perfect for recreational city riding. The Double Servo-Panta mechanism ensures that the derailleur pulley is positioned at a constant, possibly closest distance to the cassette sprockets, making gear changes even faster. The derailleur is equipped with a cable tension adjustment screw for easy indexing adjustment. The derailleur uses a MegaPulley pulley, which increases the attractiveness of the product, extends its service life and reduces noise. Product group: Tourney Model: RD-TY300D Supported number of gears: 5, 6, 7 or 8 Lower Compatibility: 11T Upper Compatibility: 34T Total capacity: 43 T Cooperation with MEGARANGE: YES Cable adjustment screw: YES Derailleur construction type: TOP NORMAL Average product weight: ~ 315 g color: black and silver weight: 315g