Shimano Altus 9-Speed Rear Derailleur

This derailleur from cycling giants Shimano keeps things simple and stealthy. The Altus 9-Speed's shadow low profile design hides moving parts for a sleek aesthetic that lets your bike's beautiful lines shine. But don't let its subtle styling fool you - this derailleur delivers dependable shifting thanks to Shimano's tried-and-true spring technology. Whether you're climbing a grueling ascent or cruising on the flats, the Altus's wide total capacity of 45 teeth and ability to handle cogs ranging from an 11-tooth all the way up to a massive 36-tooth ensure you'll always be in the right gear. So shift your ride into high gear with this lightweight, understated derailleur that delivers the smooth, precise shifting performance Shimano has been perfecting for over a century.