The Shimano Claris RD-2400 8 Speed Road Bike Rear Derailleur is a high-quality replacement part specifically designed for road bikes., this rear derailleur offers precise gear changes and smooth performance. The bolt-on mounting type makes installation quick and easy, ensuring a secure fit for optimal cycling efficiency. As a trusted brand in cycling components, Shimano's rear derailleur is a reliable choice for riders looking to upgrade or repair their road bike.